diff --git a/packages/button/index.js b/packages/button/index.js
index 63df8ca67..f46cd3486 100644
--- a/packages/button/index.js
+++ b/packages/button/index.js
@@ -4,75 +4,72 @@ import Loading from '../loading';
 
 const [sfc, bem] = use('button');
 
-export default sfc({
-  functional: true,
+function Button(h, props, slots, ctx) {
+  const { type, disabled, loading, loadingText } = props;
 
-  props: {
-    text: String,
-    block: Boolean,
-    plain: Boolean,
-    round: Boolean,
-    square: Boolean,
-    loading: Boolean,
-    disabled: Boolean,
-    nativeType: String,
-    loadingText: String,
-    bottomAction: Boolean,
-    tag: {
-      type: String,
-      default: 'button'
-    },
-    type: {
-      type: String,
-      default: 'default'
-    },
-    size: {
-      type: String,
-      default: 'normal'
+  const onClick = event => {
+    if (!loading && !disabled) {
+      emit(ctx, 'click', event);
     }
+  };
+
+  return (
+    <props.tag
+      type={props.nativeType}
+      disabled={disabled}
+      class={bem([
+        type,
+        props.size,
+        {
+          loading,
+          disabled,
+          block: props.block,
+          plain: props.plain,
+          round: props.round,
+          square: props.square,
+          'bottom-action': props.bottomAction
+        }
+      ])}
+      onClick={onClick}
+      {...inherit(ctx)}
+    >
+      {loading ? (
+        [
+          <Loading size="20px" color={type === 'default' ? undefined : ''} />,
+          loadingText && <span class={bem('loading-text')}>{loadingText}</span>
+        ]
+      ) : (
+        <span class={bem('text')}>
+          {slots.default ? slots.default() : props.text}
+        </span>
+      )}
+    </props.tag>
+  );
+}
+
+Button.props = {
+  text: String,
+  block: Boolean,
+  plain: Boolean,
+  round: Boolean,
+  square: Boolean,
+  loading: Boolean,
+  disabled: Boolean,
+  nativeType: String,
+  loadingText: String,
+  bottomAction: Boolean,
+  tag: {
+    type: String,
+    default: 'button'
   },
-
-  render(h, context) {
-    const { props } = context;
-    const { type, disabled, loading, loadingText } = props;
-
-    const onClick = event => {
-      if (!loading && !disabled) {
-        emit(context, 'click', event);
-      }
-    };
-
-    return (
-      <props.tag
-        type={props.nativeType}
-        disabled={disabled}
-        class={bem([
-          type,
-          props.size,
-          {
-            loading,
-            disabled,
-            block: props.block,
-            plain: props.plain,
-            round: props.round,
-            square: props.square,
-            'bottom-action': props.bottomAction
-          }
-        ])}
-        onClick={onClick}
-        {...inherit(context)}
-      >
-        {loading ? (
-          [
-            <Loading size="20px" color={type === 'default' ? undefined : ''} />,
-            loadingText && (
-              <span class={bem('loading-text')}>{loadingText}</span>
-            )
-          ]
-        ) : (
-          <span class={bem('text')}>{context.children || props.text}</span>
-        )}
-      </props.tag>
-    );
+  type: {
+    type: String,
+    default: 'default'
+  },
+  size: {
+    type: String,
+    default: 'normal'
   }
-});
+};
+
+export default sfc(Button);
diff --git a/packages/cell-group/index.js b/packages/cell-group/index.js
index e80a2d503..f83005d53 100644
--- a/packages/cell-group/index.js
+++ b/packages/cell-group/index.js
@@ -2,21 +2,22 @@ import { use } from '../utils';
 
 const [sfc, bem] = use('cell-group');
 
-export default sfc({
-  functional: true,
+function CellGroup(h, props, slots, ctx) {
+  return (
+    <div
+      class={[bem(), { 'van-hairline--top-bottom': props.border }]}
+      {...ctx.data}
+    >
+      {slots.default && slots.default()}
+    </div>
+  );
+}
 
-  props: {
-    border: {
-      type: Boolean,
-      default: true
-    }
-  },
-
-  render(h, context) {
-    return (
-      <div class={[bem(), { 'van-hairline--top-bottom': context.props.border }]} {...context.data}>
-        {context.children}
-      </div>
-    );
+CellGroup.props = {
+  border: {
+    type: Boolean,
+    default: true
   }
-});
+};
+
+export default sfc(CellGroup);
diff --git a/packages/cell/index.js b/packages/cell/index.js
index 51d94b722..f302d5a67 100644
--- a/packages/cell/index.js
+++ b/packages/cell/index.js
@@ -1,84 +1,80 @@
 import { use, isDef } from '../utils';
 import { cellProps } from './shared';
-import { emit, inherit, unifySlots } from '../utils/functional';
+import { emit, inherit } from '../utils/functional';
 import { routeProps, functionalRoute } from '../mixins/router';
 import Icon from '../icon';
 
 const [sfc, bem] = use('cell');
 
-export default sfc({
-  functional: true,
+function Cell(h, props, slots, ctx) {
+  const { icon, size, title, label, value, isLink, arrowDirection } = props;
 
-  props: {
-    ...cellProps,
-    ...routeProps,
-    size: String,
-    clickable: Boolean,
-    arrowDirection: String
-  },
+  const showTitle = slots.title || isDef(title);
+  const showValue = slots.default || isDef(value);
 
-  render(h, context) {
-    const slots = unifySlots(context);
-    const { props } = context;
-    const { icon, size, title, label, value, isLink, arrowDirection } = props;
+  const Title = showTitle && (
+    <div class={[bem('title'), props.titleClass]}>
+      {slots.title ? slots.title() : <span>{title}</span>}
+      {label && <div class={[bem('label'), props.labelClass]}>{label}</div>}
+    </div>
+  );
 
-    const showTitle = slots.title || isDef(title);
-    const showValue = slots.default || isDef(value);
+  const Value = showValue && (
+    <div
+      class={[
+        bem('value', { alone: !slots.title && !title }),
+        props.valueClass
+      ]}
+    >
+      {slots.default ? slots.default() : <span>{value}</span>}
+    </div>
+  );
 
-    const Title = showTitle && (
-      <div class={[bem('title'), props.titleClass]}>
-        {slots.title ? slots.title() : <span>{title}</span>}
-        {label && <div class={[bem('label'), props.labelClass]}>{label}</div>}
-      </div>
+  const LeftIcon = slots.icon
+    ? slots.icon()
+    : icon && <Icon class={bem('left-icon')} name={icon} />;
+
+  const RightIcon = slots['right-icon']
+    ? slots['right-icon']()
+    : isLink && (
+        <Icon
+          class={bem('right-icon')}
+          name={arrowDirection ? `arrow-${arrowDirection}` : 'arrow'}
+        />
     );
 
-    const Value = showValue && (
-      <div
-        class={[
-          bem('value', { alone: !slots.title && !title }),
-          props.valueClass
-        ]}
-      >
-        {slots.default ? slots.default() : <span>{value}</span>}
-      </div>
-    );
+  const onClick = event => {
+    emit(ctx, 'click', event);
+    functionalRoute(ctx);
+  };
 
-    const LeftIcon = slots.icon
-      ? slots.icon()
-      : icon && <Icon class={bem('left-icon')} name={icon} />;
+  return (
+    <div
+      class={bem({
+        center: props.center,
+        required: props.required,
+        borderless: !props.border,
+        clickable: isLink || props.clickable,
+        [size]: size
+      })}
+      onClick={onClick}
+      {...inherit(ctx)}
+    >
+      {LeftIcon}
+      {Title}
+      {Value}
+      {RightIcon}
+      {slots.extra && slots.extra()}
+    </div>
+  );
+}
 
-    const RightIcon = slots['right-icon']
-      ? slots['right-icon']()
-      : isLink && (
-          <Icon
-            class={bem('right-icon')}
-            name={arrowDirection ? `arrow-${arrowDirection}` : 'arrow'}
-          />
-      );
+Cell.props = {
+  ...cellProps,
+  ...routeProps,
+  size: String,
+  clickable: Boolean,
+  arrowDirection: String
+};
 
-    const onClick = event => {
-      emit(context, 'click', event);
-      functionalRoute(context);
-    };
-
-    return (
-      <div
-        class={bem({
-          center: props.center,
-          required: props.required,
-          borderless: !props.border,
-          clickable: isLink || props.clickable,
-          [size]: size
-        })}
-        onClick={onClick}
-        {...inherit(context)}
-      >
-        {LeftIcon}
-        {Title}
-        {Value}
-        {RightIcon}
-        {slots.extra && slots.extra()}
-      </div>
-    );
-  }
-});
+export default sfc(Cell);
diff --git a/packages/contact-card/index.js b/packages/contact-card/index.js
index 2849c0e94..1a1ff5569 100644
--- a/packages/contact-card/index.js
+++ b/packages/contact-card/index.js
@@ -4,46 +4,46 @@ import Cell from '../cell';
 
 const [sfc, bem, t] = use('contact-card');
 
-export default sfc({
-  functional: true,
+function ContactCard(h, props, slots, ctx) {
+  const { type, editable } = props;
 
-  props: {
-    tel: String,
-    name: String,
-    addText: String,
-    editable: {
-      type: Boolean,
-      default: true
-    },
-    type: {
-      type: String,
-      default: 'add'
-    }
+  return (
+    <Cell
+      center
+      border={false}
+      isLink={editable}
+      class={bem([type])}
+      valueClass={bem('value')}
+      icon={type === 'edit' ? 'contact' : 'add-square'}
+      onClick={event => {
+        if (editable) {
+          emit(ctx, 'click', event);
+        }
+      }}
+      {...inherit(ctx)}
+    >
+      {type === 'add'
+        ? props.addText || t('addText')
+        : [
+            <div>{`${t('name')}：${props.name}`}</div>,
+            <div>{`${t('tel')}：${props.tel}`}</div>
+        ]}
+    </Cell>
+  );
+}
+
+ContactCard.props = {
+  tel: String,
+  name: String,
+  addText: String,
+  editable: {
+    type: Boolean,
+    default: true
   },
-
-  render(h, context) {
-    const { props } = context;
-    const { type, editable } = props;
-
-    return (
-      <Cell
-        center
-        border={false}
-        isLink={editable}
-        class={bem([type])}
-        valueClass={bem('value')}
-        icon={type === 'edit' ? 'contact' : 'add-square'}
-        onClick={event => {
-          if (editable) {
-            emit(context, 'click', event);
-          }
-        }}
-        {...inherit(context)}
-      >
-        {type === 'add'
-          ? props.addText || t('addText')
-          : [<div>{`${t('name')}：${props.name}`}</div>, <div>{`${t('tel')}：${props.tel}`}</div>]}
-      </Cell>
-    );
+  type: {
+    type: String,
+    default: 'add'
   }
-});
+};
+
+export default sfc(ContactCard);
diff --git a/packages/contact-list/index.js b/packages/contact-list/index.js
index b45d28c76..83a579b33 100644
--- a/packages/contact-list/index.js
+++ b/packages/contact-list/index.js
@@ -8,62 +8,58 @@ import RadioGroup from '../radio-group';
 
 const [sfc, bem, t] = use('contact-list');
 
-export default sfc({
-  functional: true,
+function ContactList(h, props, slots, ctx) {
+  const List = props.list.map((item, index) => (
+    <Cell
+      key={item.id}
+      isLink
+      class={bem('item')}
+      valueClass={bem('item-value')}
+      scopedSlots={{
+        default: () => (
+          <Radio name={item.id}>
+            <div class={bem('name')}>{`${item.name}，${item.tel}`}</div>
+          </Radio>
+        ),
+        'right-icon': () => (
+          <Icon
+            name="edit"
+            class={bem('edit')}
+            onClick={event => {
+              event.stopPropagation();
+              emit(ctx, 'edit', item, index);
+            }}
+          />
+        )
+      }}
+      onClick={() => {
+        emit(ctx, 'input', item.id);
+        emit(ctx, 'select', item, index);
+      }}
+    />
+  ));
 
-  props: {
-    value: null,
-    list: Array,
-    addText: String
-  },
-
-  render(h, context) {
-    const { props, listeners } = context;
-
-    const List = props.list.map((item, index) => (
-      <Cell
-        key={item.id}
-        isLink
-        class={bem('item')}
-        valueClass={bem('item-value')}
-        scopedSlots={{
-          default: () => (
-            <Radio name={item.id}>
-              <div class={bem('name')}>{`${item.name}，${item.tel}`}</div>
-            </Radio>
-          ),
-          'right-icon': () => (
-            <Icon
-              name="edit"
-              class={bem('edit')}
-              onClick={event => {
-                event.stopPropagation();
-                emit(context, 'edit', item, index);
-              }}
-            />
-          )
-        }}
-        onClick={() => {
-          emit(context, 'input', item.id);
-          emit(context, 'select', item, index);
-        }}
+  return (
+    <div class={bem()} {...inherit(ctx)}>
+      <RadioGroup value={props.value} class={bem('group')}>
+        {List}
+      </RadioGroup>
+      <Button
+        square
+        size="large"
+        type="danger"
+        class={bem('add')}
+        text={props.addText || t('addText')}
+        onClick={ctx.listeners.add || noop}
       />
-    ));
+    </div>
+  );
+}
 
-    return (
-      <div class={bem()} {...inherit(context)}>
-        <RadioGroup value={props.value} class={bem('group')}>
-          {List}
-        </RadioGroup>
-        <Button
-          square
-          size="large"
-          type="danger"
-          class={bem('add')}
-          text={props.addText || t('addText')}
-          onClick={listeners.add || noop}
-        />
-      </div>
-    );
-  }
-});
+ContactList.props = {
+  value: null,
+  list: Array,
+  addText: String
+};
+
+export default sfc(ContactList);
diff --git a/packages/goods-action-big-btn/index.js b/packages/goods-action-big-btn/index.js
index 231ee34f5..3cdc66538 100644
--- a/packages/goods-action-big-btn/index.js
+++ b/packages/goods-action-big-btn/index.js
@@ -1,43 +1,38 @@
 import { use } from '../utils';
 import Button from '../button';
-import { emit, inherit, unifySlots } from '../utils/functional';
+import { emit, inherit } from '../utils/functional';
 import { functionalRoute, routeProps } from '../mixins/router';
 
 const [sfc, bem] = use('goods-action-big-btn');
 
-export default sfc({
-  functional: true,
+function GoodsActionBigBtn(h, props, slots, ctx) {
+  const onClick = event => {
+    emit(ctx, 'click', event);
+    functionalRoute(ctx);
+  };
 
-  props: {
-    ...routeProps,
-    text: String,
-    primary: Boolean,
-    loading: Boolean,
-    disabled: Boolean
-  },
+  return (
+    <Button
+      square
+      class={bem()}
+      size="large"
+      loading={props.loading}
+      disabled={props.disabled}
+      type={props.primary ? 'danger' : 'warning'}
+      onClick={onClick}
+      {...inherit(ctx)}
+    >
+      {slots.default ? slots.default() : props.text}
+    </Button>
+  );
+}
 
-  render(h, context) {
-    const { props } = context;
-    const slots = unifySlots(context);
+GoodsActionBigBtn.props = {
+  ...routeProps,
+  text: String,
+  primary: Boolean,
+  loading: Boolean,
+  disabled: Boolean
+};
 
-    const onClick = event => {
-      emit(context, 'click', event);
-      functionalRoute(context);
-    };
-
-    return (
-      <Button
-        square
-        class={bem()}
-        size="large"
-        loading={props.loading}
-        disabled={props.disabled}
-        type={props.primary ? 'danger' : 'warning'}
-        onClick={onClick}
-        {...inherit(context)}
-      >
-        {slots.default ? slots.default() : props.text}
-      </Button>
-    );
-  }
-});
+export default sfc(GoodsActionBigBtn);
diff --git a/packages/goods-action-mini-btn/index.js b/packages/goods-action-mini-btn/index.js
index 2c2a2887a..4be77a8d4 100644
--- a/packages/goods-action-mini-btn/index.js
+++ b/packages/goods-action-mini-btn/index.js
@@ -1,43 +1,38 @@
 import { use } from '../utils';
 import Icon from '../icon';
-import { emit, inherit, unifySlots } from '../utils/functional';
+import { emit, inherit } from '../utils/functional';
 import { functionalRoute, routeProps } from '../mixins/router';
 
 const [sfc, bem] = use('goods-action-mini-btn');
 
-export default sfc({
-  functional: true,
+function GoodsActionMiniBtn(h, props, slots, ctx) {
+  const onClick = event => {
+    emit(ctx, 'click', event);
+    functionalRoute(ctx);
+  };
 
-  props: {
-    ...routeProps,
-    text: String,
-    icon: String,
-    info: [String, Number],
-    iconClass: String
-  },
+  return (
+    <div
+      class={[bem(), 'van-hairline']}
+      onClick={onClick}
+      {...inherit(ctx)}
+    >
+      <Icon
+        class={[bem('icon'), props.iconClass]}
+        info={props.info}
+        name={props.icon}
+      />
+      {slots.default ? slots.default() : props.text}
+    </div>
+  );
+}
 
-  render(h, context) {
-    const { props } = context;
-    const slots = unifySlots(context);
+GoodsActionMiniBtn.props = {
+  ...routeProps,
+  text: String,
+  icon: String,
+  info: [String, Number],
+  iconClass: String
+};
 
-    const onClick = event => {
-      emit(context, 'click', event);
-      functionalRoute(context);
-    };
-
-    return (
-      <div
-        class={[bem(), 'van-hairline']}
-        onClick={onClick}
-        {...inherit(context)}
-      >
-        <Icon
-          class={[bem('icon'), props.iconClass]}
-          info={props.info}
-          name={props.icon}
-        />
-        {slots.default ? slots.default() : props.text}
-      </div>
-    );
-  }
-});
+export default sfc(GoodsActionMiniBtn);
diff --git a/packages/goods-action/index.js b/packages/goods-action/index.js
index d201ad9a7..2ac8e95aa 100644
--- a/packages/goods-action/index.js
+++ b/packages/goods-action/index.js
@@ -2,14 +2,12 @@ import { use } from '../utils';
 
 const [sfc, bem] = use('goods-action');
 
-export default sfc({
-  functional: true,
+function GoodsAction(h, props, slots, ctx) {
+  return (
+    <div class={bem()} {...ctx.data}>
+      {slots.default && slots.default()}
+    </div>
+  );
+}
 
-  render(h, context) {
-    return (
-      <div class={bem()} {...context.data}>
-        {context.children}
-      </div>
-    );
-  }
-});
+export default sfc(GoodsAction);
diff --git a/packages/icon/index.js b/packages/icon/index.js
index d7d7b9ec2..1777814be 100644
--- a/packages/icon/index.js
+++ b/packages/icon/index.js
@@ -4,40 +4,37 @@ import isSrc from '../utils/validate/src';
 
 const [sfc] = use('icon');
 
-export default sfc({
-  functional: true,
+function Icon(h, props, slots, ctx) {
+  const urlIcon = isSrc(props.name);
 
-  props: {
-    name: String,
-    size: String,
-    color: String,
-    info: [String, Number],
-    classPrefix: {
-      type: String,
-      default: 'van-icon'
-    }
-  },
+  return (
+    <i
+      class={[
+        props.classPrefix,
+        urlIcon ? 'van-icon--image' : `${props.classPrefix}-${props.name}`
+      ]}
+      style={{
+        color: props.color,
+        fontSize: props.size
+      }}
+      {...ctx.data}
+    >
+      {ctx.default && ctx.default()}
+      {urlIcon && <img src={props.name} />}
+      <Info info={props.info} />
+    </i>
+  );
+}
 
-  render(h, context) {
-    const { props } = context;
-    const urlIcon = isSrc(props.name);
-
-    return (
-      <i
-        class={[
-          props.classPrefix,
-          urlIcon ? 'van-icon--image' : `${props.classPrefix}-${props.name}`
-        ]}
-        style={{
-          color: props.color,
-          fontSize: props.size
-        }}
-        {...context.data}
-      >
-        {context.children}
-        {urlIcon && <img src={props.name} />}
-        <Info info={props.info} />
-      </i>
-    );
+Icon.props = {
+  name: String,
+  size: String,
+  color: String,
+  info: [String, Number],
+  classPrefix: {
+    type: String,
+    default: 'van-icon'
   }
-});
+};
+
+export default sfc(Icon);
diff --git a/packages/info/index.js b/packages/info/index.js
index e98c33bad..df544617c 100644
--- a/packages/info/index.js
+++ b/packages/info/index.js
@@ -2,20 +2,18 @@ import { use, isDef } from '../utils';
 
 const [sfc, bem] = use('info');
 
-export default sfc({
-  functional: true,
+function Info(h, props, slots, ctx) {
+  return (
+    isDef(props.info) && (
+      <div class={bem()} {...ctx.data}>
+        {props.info}
+      </div>
+    )
+  );
+}
 
-  props: {
-    info: [String, Number]
-  },
+Info.props = {
+  info: [String, Number]
+};
 
-  render(h, { props, data }) {
-    return (
-      isDef(props.info) && (
-        <div class={bem()} {...data}>
-          {props.info}
-        </div>
-      )
-    );
-  }
-});
+export default sfc(Info);
diff --git a/packages/loading/index.js b/packages/loading/index.js
index 9c038242a..44bd8c2ad 100644
--- a/packages/loading/index.js
+++ b/packages/loading/index.js
@@ -3,52 +3,50 @@ import { use } from '../utils';
 const [sfc, bem] = use('loading');
 const DEFAULT_COLOR = '#c9c9c9';
 
-export default sfc({
-  functional: true,
+function Loading(h, props, slots, ctx) {
+  const { color, size, type } = props;
 
-  props: {
-    size: String,
-    type: {
-      type: String,
-      default: 'circular'
-    },
-    color: {
-      type: String,
-      default: DEFAULT_COLOR
+  const colorType = color === 'white' || color === 'black' ? color : '';
+
+  const style = {
+    color: color === 'black' ? DEFAULT_COLOR : color,
+    width: size,
+    height: size
+  };
+
+  const Spin = [];
+  if (type === 'spinner') {
+    for (let i = 0; i < 12; i++) {
+      Spin.push(<i />);
     }
-  },
-
-  render(h, context) {
-    const { color, size, type } = context.props;
-
-    const colorType = color === 'white' || color === 'black' ? color : '';
-
-    const style = {
-      color: color === 'black' ? DEFAULT_COLOR : color,
-      width: size,
-      height: size
-    };
-
-    const Spin = [];
-    if (type === 'spinner') {
-      for (let i = 0; i < 12; i++) {
-        Spin.push(<i />);
-      }
-    }
-
-    const Circular = type === 'circular' && (
-      <svg class={bem('circular')} viewBox="25 25 50 50">
-        <circle cx="50" cy="50" r="20" fill="none" />
-      </svg>
-    );
-
-    return (
-      <div class={bem([type, colorType])} style={style} {...context.data}>
-        <span class={bem('spinner', type)}>
-          {Spin}
-          {Circular}
-        </span>
-      </div>
-    );
   }
-});
+
+  const Circular = type === 'circular' && (
+    <svg class={bem('circular')} viewBox="25 25 50 50">
+      <circle cx="50" cy="50" r="20" fill="none" />
+    </svg>
+  );
+
+  return (
+    <div class={bem([type, colorType])} style={style} {...ctx.data}>
+      <span class={bem('spinner', type)}>
+        {Spin}
+        {Circular}
+      </span>
+    </div>
+  );
+}
+
+Loading.props = {
+  size: String,
+  type: {
+    type: String,
+    default: 'circular'
+  },
+  color: {
+    type: String,
+    default: DEFAULT_COLOR
+  }
+};
+
+export default sfc(Loading);
diff --git a/packages/nav-bar/index.js b/packages/nav-bar/index.js
index 676c3b09c..8bde4d2c9 100644
--- a/packages/nav-bar/index.js
+++ b/packages/nav-bar/index.js
@@ -4,46 +4,56 @@ import Icon from '../icon';
 
 const [sfc, bem] = use('nav-bar');
 
-export default sfc({
-  functional: true,
-
-  props: {
-    title: String,
-    fixed: Boolean,
-    leftText: String,
-    rightText: String,
-    leftArrow: Boolean,
-    border: {
-      type: Boolean,
-      default: true
-    },
-    zIndex: {
-      type: Number,
-      default: 1
-    }
-  },
-
-  render(h, context) {
-    const { props, listeners } = context;
-    const slots = context.slots();
-
-    return (
-      <div
-        class={[bem({ fixed: props.fixed }), { 'van-hairline--bottom': props.border }]}
-        style={{ zIndex: props.zIndex }}
-        {...inherit(context)}
-      >
-        <div class={bem('left')} onClick={listeners['click-left'] || noop}>
-          {slots.left || [
-            props.leftArrow && <Icon class={bem('arrow')} name="arrow-left" />,
-            props.leftText && <span class={bem('text')}>{props.leftText}</span>
+function NavBar(h, props, slots, ctx) {
+  return (
+    <div
+      class={[
+        bem({ fixed: props.fixed }),
+        { 'van-hairline--bottom': props.border }
+      ]}
+      style={{ zIndex: props.zIndex }}
+      {...inherit(ctx)}
+    >
+      <div class={bem('left')} onClick={ctx.listeners['click-left'] || noop}>
+        {slots.left
+          ? slots.left()
+          : [
+            props.leftArrow && (
+              <Icon class={bem('arrow')} name="arrow-left" />
+            ),
+            props.leftText && (
+              <span class={bem('text')}>{props.leftText}</span>
+            )
           ]}
-        </div>
-        <div class={[bem('title'), 'van-ellipsis']}>{slots.title || props.title}</div>
-        <div class={bem('right')} onClick={listeners['click-right'] || noop}>
-          {slots.right || (props.rightText && <span class={bem('text')}>{props.rightText}</span>)}
-        </div>
       </div>
-    );
+      <div class={[bem('title'), 'van-ellipsis']}>
+        {slots.title ? slots.title() : props.title}
+      </div>
+      <div class={bem('right')} onClick={ctx.listeners['click-right'] || noop}>
+        {slots.right
+          ? slots.right()
+          : props.rightText && (
+              <span class={bem('text')}>{props.rightText}</span>
+          )}
+      </div>
+    </div>
+  );
+}
+
+NavBar.props = {
+  title: String,
+  fixed: Boolean,
+  leftText: String,
+  rightText: String,
+  leftArrow: Boolean,
+  border: {
+    type: Boolean,
+    default: true
+  },
+  zIndex: {
+    type: Number,
+    default: 1
   }
-});
+};
+
+export default sfc(NavBar);
diff --git a/packages/panel/index.js b/packages/panel/index.js
index 27c18a2fc..63f37f600 100644
--- a/packages/panel/index.js
+++ b/packages/panel/index.js
@@ -4,35 +4,34 @@ import CellGroup from '../cell-group';
 
 const [sfc, bem] = use('panel');
 
-export default sfc({
-  functional: true,
+function Panel(h, props, slots, ctx) {
+  return (
+    <CellGroup class={bem()} {...ctx.data}>
+      {slots.header ? (
+        slots.header()
+      ) : (
+        <Cell
+          icon={props.icon}
+          label={props.desc}
+          title={props.title}
+          value={props.status}
+          class={bem('header')}
+          valueClass={bem('header-value')}
+        />
+      )}
+      <div class={bem('content')}>{slots.default && slots.default()}</div>
+      {slots.footer && (
+        <div class={[bem('footer'), 'van-hairline--top']}>{slots.footer()}</div>
+      )}
+    </CellGroup>
+  );
+}
 
-  props: {
-    icon: String,
-    desc: String,
-    title: String,
-    status: String
-  },
+Panel.props = {
+  icon: String,
+  desc: String,
+  title: String,
+  status: String
+};
 
-  render(h, context) {
-    const { props } = context;
-    const slots = context.slots();
-
-    return (
-      <CellGroup class={bem()} {...context.data}>
-        {slots.header || (
-          <Cell
-            icon={props.icon}
-            label={props.desc}
-            title={props.title}
-            value={props.status}
-            class={bem('header')}
-            valueClass={bem('header-value')}
-          />
-        )}
-        <div class={bem('content')}>{slots.default}</div>
-        {slots.footer && <div class={[bem('footer'), 'van-hairline--top']}>{slots.footer}</div>}
-      </CellGroup>
-    );
-  }
-});
+export default sfc(Panel);
diff --git a/packages/password-input/index.js b/packages/password-input/index.js
index 1338e834d..4626b6c33 100644
--- a/packages/password-input/index.js
+++ b/packages/password-input/index.js
@@ -3,49 +3,48 @@ import { emit } from '../utils/functional';
 
 const [sfc, bem] = use('password-input');
 
-export default sfc({
-  functional: true,
+function PasswordInput(h, props, slots, ctx) {
+  const info = props.errorInfo || props.info;
 
-  props: {
-    info: String,
-    errorInfo: String,
-    value: {
-      type: String,
-      default: ''
-    },
-    length: {
-      type: Number,
-      default: 6
-    }
-  },
-
-  render(h, context) {
-    const { props } = context;
-    const info = props.errorInfo || props.info;
-
-    const Points = [];
-    for (let i = 0; i < props.length; i++) {
-      Points.push(
-        <li class="van-hairline">
-          <i style={{ visibility: props.value[i] ? 'visible' : 'hidden' }} />
-        </li>
-      );
-    }
-
-    return (
-      <div class={bem()}>
-        <ul
-          class={[bem('security'), 'van-hairline--surround']}
-          onTouchstart={event => {
-            event.stopPropagation();
-            emit(context, 'focus', event);
-          }}
-          {...context.data}
-        >
-          {Points}
-        </ul>
-        {info && <div class={bem(props.errorInfo ? 'error-info' : 'info')}>{info}</div>}
-      </div>
+  const Points = [];
+  for (let i = 0; i < props.length; i++) {
+    Points.push(
+      <li class="van-hairline">
+        <i style={{ visibility: props.value[i] ? 'visible' : 'hidden' }} />
+      </li>
     );
   }
-});
+
+  return (
+    <div class={bem()}>
+      <ul
+        class={[bem('security'), 'van-hairline--surround']}
+        onTouchstart={event => {
+          event.stopPropagation();
+          emit(ctx, 'focus', event);
+        }}
+        {...ctx.data}
+      >
+        {Points}
+      </ul>
+      {info && (
+        <div class={bem(props.errorInfo ? 'error-info' : 'info')}>{info}</div>
+      )}
+    </div>
+  );
+}
+
+PasswordInput.props = {
+  info: String,
+  errorInfo: String,
+  value: {
+    type: String,
+    default: ''
+  },
+  length: {
+    type: Number,
+    default: 6
+  }
+};
+
+export default sfc(PasswordInput);
diff --git a/packages/submit-bar/index.js b/packages/submit-bar/index.js
index 86a30c1cc..fbadd17b3 100644
--- a/packages/submit-bar/index.js
+++ b/packages/submit-bar/index.js
@@ -4,63 +4,61 @@ import Button from '../button';
 
 const [sfc, bem, t] = use('submit-bar');
 
-export default sfc({
-  functional: true,
+function SubmitBar(h, props, slots, ctx) {
+  const { tip, price } = props;
+  const hasPrice = typeof price === 'number';
 
-  props: {
-    tip: String,
-    label: String,
-    loading: Boolean,
-    disabled: Boolean,
-    buttonText: String,
-    price: {
-      type: Number,
-      default: null
-    },
-    currency: {
-      type: String,
-      default: '¥'
-    },
-    buttonType: {
-      type: String,
-      default: 'danger'
-    }
-  },
-
-  render(h, context) {
-    const { props, listeners } = context;
-    const { tip, price } = props;
-    const slots = context.slots();
-    const hasPrice = typeof price === 'number';
-
-    return (
-      <div class={bem()} {...inherit(context)}>
-        {slots.top}
-        {(slots.tip || tip) && (
-          <div class={bem('tip')}>
-            {tip}
-            {slots.tip}
-          </div>
-        )}
-        <div class={bem('bar')}>
-          {slots.default}
-          <div class={bem('text')}>
-            {hasPrice && [
-              <span>{props.label || t('label')}</span>,
-              <span class={bem('price')}>{`${props.currency} ${(price / 100).toFixed(2)}`}</span>
-            ]}
-          </div>
-          <Button
-            square
-            size="large"
-            type={props.buttonType}
-            loading={props.loading}
-            disabled={props.disabled}
-            text={props.loading ? '' : props.buttonText}
-            onClick={listeners.submit || noop}
-          />
+  return (
+    <div class={bem()} {...inherit(ctx)}>
+      {slots.top && slots.top()}
+      {(slots.tip || tip) && (
+        <div class={bem('tip')}>
+          {tip}
+          {slots.tip && slots.tip()}
         </div>
+      )}
+      <div class={bem('bar')}>
+        {slots.default && slots.default()}
+        <div class={bem('text')}>
+          {hasPrice && [
+            <span>{props.label || t('label')}</span>,
+            <span class={bem('price')}>{`${props.currency} ${(
+              price / 100
+            ).toFixed(2)}`}</span>
+          ]}
+        </div>
+        <Button
+          square
+          size="large"
+          type={props.buttonType}
+          loading={props.loading}
+          disabled={props.disabled}
+          text={props.loading ? '' : props.buttonText}
+          onClick={ctx.listeners.submit || noop}
+        />
       </div>
-    );
+    </div>
+  );
+}
+
+SubmitBar.props = {
+  tip: String,
+  label: String,
+  loading: Boolean,
+  disabled: Boolean,
+  buttonText: String,
+  price: {
+    type: Number,
+    default: null
+  },
+  currency: {
+    type: String,
+    default: '¥'
+  },
+  buttonType: {
+    type: String,
+    default: 'danger'
   }
-});
+};
+
+export default sfc(SubmitBar);
diff --git a/packages/switch-cell/index.js b/packages/switch-cell/index.js
index 8da552669..367508ef1 100644
--- a/packages/switch-cell/index.js
+++ b/packages/switch-cell/index.js
@@ -2,31 +2,32 @@ import { use } from '../utils';
 import { inherit } from '../utils/functional';
 import Cell from '../cell';
 import Switch from '../switch';
-import SwitchMixin from '../mixins/switch';
+import { switchProps } from '../switch/shared';
 
 const [sfc, bem] = use('switch-cell');
 
-export default sfc({
-  functional: true,
+function SwitchCell(h, props, slots, ctx) {
+  return (
+    <Cell
+      center
+      title={props.title}
+      border={props.border}
+      class={bem()}
+      {...inherit(ctx)}
+    >
+      <Switch {...{ props, on: ctx.listeners }} />
+    </Cell>
+  );
+}
 
-  mixins: [SwitchMixin],
-
-  props: {
-    title: String,
-    border: Boolean,
-    size: {
-      type: String,
-      default: '24px'
-    }
-  },
-
-  render(h, context) {
-    const { props } = context;
-
-    return (
-      <Cell center title={props.title} border={props.border} class={bem()} {...inherit(context)}>
-        <Switch {...{ props, on: context.listeners }} />
-      </Cell>
-    );
+SwitchCell.props = {
+  ...switchProps,
+  title: String,
+  border: Boolean,
+  size: {
+    type: String,
+    default: '24px'
   }
-});
+};
+
+export default sfc(SwitchCell);
diff --git a/packages/switch/index.js b/packages/switch/index.js
index 07815f6dd..315cbdae7 100644
--- a/packages/switch/index.js
+++ b/packages/switch/index.js
@@ -1,11 +1,11 @@
 import { use } from '../utils';
 import Loading from '../loading';
-import SwitchMixin from '../mixins/switch';
+import { switchProps } from './shared';
 
 const [sfc, bem] = use('switch');
 
 export default sfc({
-  mixins: [SwitchMixin],
+  props: switchProps,
 
   methods: {
     onClick() {
diff --git a/packages/switch/shared.ts b/packages/switch/shared.ts
new file mode 100644
index 000000000..c5443f849
--- /dev/null
+++ b/packages/switch/shared.ts
@@ -0,0 +1,23 @@
+/**
+ * Common Switch Props
+ */
+
+export const switchProps = {
+  value: null,
+  loading: Boolean,
+  disabled: Boolean,
+  activeColor: String,
+  inactiveColor: String,
+  activeValue: {
+    type: null,
+    default: true
+  },
+  inactiveValue: {
+    type: null,
+    default: false
+  },
+  size: {
+    type: String,
+    default: '30px'
+  }
+};
diff --git a/packages/tag/index.js b/packages/tag/index.js
index 18e5efc0b..82a703737 100644
--- a/packages/tag/index.js
+++ b/packages/tag/index.js
@@ -9,44 +9,41 @@ const COLOR_MAP = {
   success: GREEN
 };
 
-export default sfc({
-  functional: true,
+function Tag(h, props, slots, ctx) {
+  const { mark, plain, round, size } = ctx.props;
 
-  props: {
-    size: String,
-    type: String,
-    mark: Boolean,
-    color: String,
-    plain: Boolean,
-    round: Boolean,
-    textColor: String
-  },
+  const color = props.color || COLOR_MAP[props.type] || GRAY_DARK;
+  const key = plain ? 'color' : 'backgroundColor';
+  const style = { [key]: color };
 
-  render(h, context) {
-    const { props } = context;
-    const { mark, plain, round, size } = context.props;
-
-    const color = props.color || COLOR_MAP[props.type] || GRAY_DARK;
-    const key = plain ? 'color' : 'backgroundColor';
-    const style = { [key]: color };
-
-    if (props.textColor) {
-      style.color = props.textColor;
-    }
-
-    return (
-      <span
-        style={style}
-        class={[
-          bem({ mark, plain, round, [size]: size }),
-          {
-            'van-hairline--surround': plain
-          }
-        ]}
-        {...context.data}
-      >
-        {context.children}
-      </span>
-    );
+  if (props.textColor) {
+    style.color = props.textColor;
   }
-});
+
+  return (
+    <span
+      style={style}
+      class={[
+        bem({ mark, plain, round, [size]: size }),
+        {
+          'van-hairline--surround': plain
+        }
+      ]}
+      {...ctx.data}
+    >
+      {slots.default && slots.default()}
+    </span>
+  );
+}
+
+Tag.props = {
+  size: String,
+  type: String,
+  mark: Boolean,
+  color: String,
+  plain: Boolean,
+  round: Boolean,
+  textColor: String
+};
+
+export default sfc(Tag);
diff --git a/packages/utils/functional.ts b/packages/utils/functional.ts
index adc91613b..3242d790d 100644
--- a/packages/utils/functional.ts
+++ b/packages/utils/functional.ts
@@ -1,5 +1,4 @@
 import { RenderContext, VNodeData } from 'vue/types';
-import { ScopedSlot } from 'vue/types/vnode';
 
 type ObjectIndex = {
   [key: string]: any;
@@ -47,17 +46,3 @@ export function emit(context: Context, eventName: string, ...args: any[]) {
     }
   }
 }
-
-// unify slots & scopedSlots
-export function unifySlots(context: Context) {
-  const { scopedSlots } = context;
-  const slots = context.slots();
-
-  Object.keys(slots).forEach(key => {
-    if (!scopedSlots[key]) {
-      scopedSlots[key] = () => slots[key];
-    }
-  });
-
-  return scopedSlots;
-}
diff --git a/packages/utils/use/sfc.ts b/packages/utils/use/sfc.ts
index ee38fd201..c1fc6be35 100644
--- a/packages/utils/use/sfc.ts
+++ b/packages/utils/use/sfc.ts
@@ -4,13 +4,29 @@
 import '../../locale';
 import { camelize } from '..';
 import SlotsMixin from '../../mixins/slots';
-import Vue, { VueConstructor, ComponentOptions } from 'vue';
+import Vue, {
+  VueConstructor,
+  ComponentOptions,
+  CreateElement,
+  RenderContext
+} from 'vue/types';
+import { VNode, ScopedSlot } from 'vue/types/vnode';
 
 type VantComponentOptions = ComponentOptions<Vue> & {
   functional?: boolean;
   install?: (Vue: VueConstructor) => void;
 };
 
+type VantPureComponent = {
+  (
+    h: CreateElement,
+    props: { [key: string]: any },
+    slots: { [key: string]: ScopedSlot | undefined },
+    context: RenderContext
+  ): VNode;
+  props: any;
+};
+
 const arrayProp = {
   type: Array,
   default: () => []
@@ -39,15 +55,46 @@ function install(this: ComponentOptions<Vue>, Vue: VueConstructor) {
   }
 }
 
-export default (name: string) => (sfc: VantComponentOptions) => {
-  sfc.name = name;
-  sfc.install = install;
-  sfc.mixins = sfc.mixins || [];
-  sfc.mixins.push(SlotsMixin);
+// unify slots & scopedSlots
+export function unifySlots(context: RenderContext) {
+  const { scopedSlots } = context;
+  const slots = context.slots();
+
+  Object.keys(slots).forEach(key => {
+    if (!scopedSlots[key]) {
+      scopedSlots[key] = () => slots[key];
+    }
+  });
+
+  return scopedSlots;
+}
+
+function transformPureComponent(pure: VantPureComponent): VantComponentOptions {
+  return {
+    functional: true,
+    props: pure.props,
+    render: (h, context) => pure(h, context.props, unifySlots(context), context)
+  };
+}
+
+export default (name: string) => (
+  sfc: VantComponentOptions | VantPureComponent
+) => {
+  if (typeof sfc === 'function') {
+    sfc = transformPureComponent(sfc);
+  }
+
+  if (!sfc.functional) {
+    sfc.mixins = sfc.mixins || [];
+    sfc.mixins.push(SlotsMixin);
+  }
 
   if (sfc.props) {
     defaultProps(sfc.props);
   }
 
+  sfc.name = name;
+  sfc.install = install;
+
   return sfc;
 };