diff --git a/docs/demos/views/sku.vue b/docs/demos/views/sku.vue
index 97bc35520..6a956a76c 100644
--- a/docs/demos/views/sku.vue
+++ b/docs/demos/views/sku.vue
@@ -20,6 +20,24 @@
       </div>
     </demo-block>
 
+    <demo-block :title="$t('title2')">
+      <div class="sku-container">
+        <van-sku
+          v-model="showBase"
+          :sku="$t('sku').sku"
+          :goods="$t('sku').goods_info"
+          :goods-id="$t('sku').goods_id"
+          :hide-stock="$t('sku').sku.hide_stock"
+          :quota="$t('sku').quota"
+          :quota-used="$t('sku').quota_used"
+          :custom-stepper-config="customStepperConfig"
+          @buy-clicked="onBuyClicked"
+          @add-cart="onAddCartClicked"
+        />
+        <van-button type="primary" @click="showBase = true" block>{{ $t('title2') }}</van-button>
+      </div>
+    </demo-block>
+
     <demo-block :title="$t('advancedUsage')">
       <div class="sku-container">
         <van-sku
@@ -52,17 +70,20 @@
 
 <script>
 import data from '../mock/sku';
+import { LIMIT_TYPE } from '../../../packages/sku/constants';
 
 export default {
   i18n: {
     'zh-CN': {
       sku: data['zh-CN'],
+      title2: '自定义步进器相关配置',
       stepperTitle: '我要买',
       button1: '积分兑换',
       button2: '买买买'
     },
     'en-US': {
       sku: data['en-US'],
+      title2: 'Custom Stepper Related Config',
       stepperTitle: 'Stepper title',
       button1: 'Button',
       button2: 'Button'
@@ -76,6 +97,22 @@ export default {
       initialSku: {
         s1: '30349',
         s2: '1193'
+      },
+      customStepperConfig: {
+        quotaText: '单次限购100件',
+        handleOverLimit: (data) => {
+          const { action, limitType, quota } = data;
+
+          if (action === 'minus') {
+            Toast('至少选择一件商品');
+          } else if (action === 'plus') {
+            if (limitType === LIMIT_TYPE.QUOTA_LIMIT) {
+              Toast(`限购${quota}件`);
+            } else {
+              Toast('库存不够了~~');
+            }
+          }
+        }
       }
     };
   },
diff --git a/docs/demos/views/tab.vue b/docs/demos/views/tab.vue
index 9585a7efc..63b120025 100644
--- a/docs/demos/views/tab.vue
+++ b/docs/demos/views/tab.vue
@@ -47,6 +47,17 @@
         </van-tab>
       </van-tabs>
     </demo-block>
+
+    <demo-block :title="$t('title7')">
+      <van-tabs :active="active">
+        <van-tab v-for="index in 2" :key="index">
+          <div slot="title">
+            <van-icon name="more-o" />{{ $t('tab') }}
+          </div>
+          {{ $t('content') }} {{ index }}
+        </van-tab>
+      </van-tabs>
+    </demo-block>
   </demo-section>
 </template>
 
@@ -59,7 +70,8 @@ export default {
       title3: '禁用标签',
       title4: '样式风格',
       title5: '点击事件',
-      title6: '粘性布局'
+      title6: '粘性布局',
+      title7: '自定义标签'
     },
     'en-US': {
       tab: 'Tab ',
@@ -68,7 +80,8 @@ export default {
       title3: 'Disabled Tab',
       title4: 'Card Style',
       title5: 'Click Event',
-      title6: 'Sticky'
+      title6: 'Sticky',
+      title7: 'Custom Tab'
     }
   },
 
@@ -79,12 +92,6 @@ export default {
     };
   },
 
-  mounted() {
-    setTimeout(() => {
-      this.active = 3;
-    }, 1000);
-  },
-
   methods: {
     onClickDisabled() {
       Toast('Disabled!');
@@ -101,6 +108,11 @@ export default {
 .demo-tab {
   margin-bottom: 700px;
 
+  .van-tab .van-icon {
+    margin-right: 5px;
+    vertical-align: -2px;
+  }
+
   .van-tab__pane {
     background-color: #fff;
     padding: 20px;
diff --git a/docs/markdown/en-US/sku.md b/docs/markdown/en-US/sku.md
index bef63dc4d..3c35d5bf3 100644
--- a/docs/markdown/en-US/sku.md
+++ b/docs/markdown/en-US/sku.md
@@ -27,6 +27,23 @@ Vue.use(Sku);
 />
 ```
 
+#### Custom Stepper Config
+
+```html
+<van-sku
+  v-model="showBase"
+  :sku="sku"
+  :goods="goods"
+  :goods-id="goodsId"
+  :hide-stock="sku.hide_stock"
+  :quota="quota"
+  :quota-used="quotaUsed"
+  :custom-stepper-config="customStepperConfig"
+  @buy-clicked="onBuyClicked"
+  @add-cart="onAddCartClicked"
+/>
+```
+
 #### Advanced Usage
 
 ```html
@@ -72,6 +89,7 @@ Vue.use(Sku);
 | reset-selected-sku-on-hide | Whether to reset selected sku when hide | `Boolean` | `false` | - |
 | disable-stepper-input | Whether to disable stepper input | `Boolean` | `false` | - |
 | stepper-title | Quantity title | `String` | `Quantity` | - |
+| custom-stepper-config | Custom stepper related config | `Object` | `{}` | - |
 
 ### Event
 
@@ -156,6 +174,32 @@ goods: {
 }
 ```
 
+
+#### customStepperConfig Data Structure
+```javascript
+customStepperConfig: {
+  // custom quota text
+  quotaText: 'only 5 can buy',
+  // custom callback when over limit
+  handleOverLimit: (data) => {
+    const { action, limitType, quota, quotaUsed } = data;
+
+    if (action === 'minus') {
+      Toast('at least select one');
+    } else if (action === 'plus') {
+      // const { LIMIT_TYPE } = Sku.skuConstants;
+      if (limitType === LIMIT_TYPE.QUOTA_LIMIT) {
+        let msg = `Buy up to ${quota}`;
+        if (quotaUsed > 0) msg += `，you already buy ${quotaUsed}`;
+        Toast(msg);
+      } else {
+        Toast('not enough stock');
+      }
+    }
+  }
+}
+```
+
 #### Event Params Data Structure
 
 ```javascript
diff --git a/docs/markdown/en-US/tab.md b/docs/markdown/en-US/tab.md
index 0d49dda37..f7d2a4e21 100644
--- a/docs/markdown/en-US/tab.md
+++ b/docs/markdown/en-US/tab.md
@@ -104,8 +104,22 @@ In sticky mode, the tab will be fixed to top when scroll to top
 
 ```html
 <van-tabs :active="active" sticky>
-  <van-tab v-for="index in 4" :title="'选项 ' + index">
-    内容 {{ index }}
+  <van-tab v-for="index in 4" :title="'tab ' + index">
+    content {{ index }}
+  </van-tab>
+</van-tabs>
+```
+
+#### Custom title
+Use title slot to custom tab title
+
+```html
+<van-tabs :active="active">
+  <van-tab v-for="index in 2">
+    <div slot="title">
+      <van-icon name="more-o" />tab
+    </div>
+    content {{ index }}
   </van-tab>
 </van-tabs>
 ```
@@ -126,6 +140,13 @@ In sticky mode, the tab will be fixed to top when scroll to top
 | title | Tab title | `String` | - | - |
 | disabled | Whether disabled current tab | `Boolean` | `false` | - |
 
+### Tab Slot
+
+| name | Description |
+|-----------|-----------|
+| - | Content |
+| title | Custom tab |
+
 ### Tabs Event
 
 | Event | Description | Arguments |
diff --git a/docs/markdown/zh-CN/sku.md b/docs/markdown/zh-CN/sku.md
index d8e555ec4..21b4f3a19 100644
--- a/docs/markdown/zh-CN/sku.md
+++ b/docs/markdown/zh-CN/sku.md
@@ -27,6 +27,23 @@ Vue.use(Sku);
 />
 ```
 
+#### 自定义步进器相关配置
+
+```html
+<van-sku
+  v-model="showBase"
+  :sku="sku"
+  :goods="goods"
+  :goods-id="goodsId"
+  :hide-stock="sku.hide_stock"
+  :quota="quota"
+  :quota-used="quotaUsed"
+  :custom-stepper-config="customStepperConfig"
+  @buy-clicked="onBuyClicked"
+  @add-cart="onAddCartClicked"
+/>
+```
+
 #### 高级用法
 
 ```html
@@ -73,6 +90,7 @@ Vue.use(Sku);
 | reset-selected-sku-on-hide | 窗口隐藏时重置已选择的sku | `Boolean` | `false` | - |
 | disable-stepper-input | 是否禁用sku中stepper的input框 | `Boolean` | `false` | - |
 | stepper-title | 数量选择组件左侧文案 | `String` | `购买数量` | - |
+| custom-stepper-config | 步进器相关自定义配置 | `Object` | `{}` | - |
 
 ### Event
 
@@ -163,6 +181,31 @@ goods: {
 }
 ```
 
+#### customStepperConfig 对象结构
+```javascript
+customStepperConfig: {
+  // 自定义限购文案
+  quotaText: '每次限购xxx件',
+  // 自定义步进器超过限制时的回调
+  handleOverLimit: (data) => {
+    const { action, limitType, quota, quotaUsed } = data;
+
+    if (action === 'minus') {
+      Toast('至少选择一件商品');
+    } else if (action === 'plus') {
+      // const { LIMIT_TYPE } = Sku.skuConstants;
+      if (limitType === LIMIT_TYPE.QUOTA_LIMIT) {
+        let msg = `单次限购${quota}件`;
+        if (quotaUsed > 0) msg += `，您已购买${quotaUsed}`;
+        Toast(msg);
+      } else {
+        Toast('库存不够了~~');
+      }
+    }
+  }
+}
+```
+
 #### 添加购物车和点击购买回调函数接收的 skuData 对象结构
 ```javascript
 skuData: {
diff --git a/docs/markdown/zh-CN/tab.md b/docs/markdown/zh-CN/tab.md
index e3e3a94bb..3ac38def3 100644
--- a/docs/markdown/zh-CN/tab.md
+++ b/docs/markdown/zh-CN/tab.md
@@ -110,6 +110,20 @@ export default {
 </van-tabs>
 ```
 
+#### 自定义标签
+通过 title slot 可以自定义标签内容
+
+```html
+<van-tabs :active="active">
+  <van-tab v-for="index in 2">
+    <div slot="title">
+      <van-icon name="more-o" />选项
+    </div>
+    内容 {{ index }}
+  </van-tab>
+</van-tabs>
+```
+
 ### Tabs API
 
 | 参数 | 说明 | 类型 | 默认值 | 可选 |
@@ -127,6 +141,13 @@ export default {
 | title | tab的标题 | `String` | - | - |
 | disabled | 是否禁用这个tab | `Boolean` | `false` | - |
 
+### Tab Slot
+
+| 名称 | 说明 |
+|-----------|-----------|
+| - | 标签页内容 |
+| title | 自定义标签 |
+
 ### Tabs Event
 
 | 事件名 | 说明 | 参数 |
diff --git a/package.json b/package.json
index e4ac4560d..47304bcdd 100644
--- a/package.json
+++ b/package.json
@@ -82,7 +82,7 @@
     "karma-spec-reporter": "^0.0.32",
     "karma-webpack": "^2.0.9",
     "mocha": "^4.0.1",
-    "postcss": "^6.0.16",
+    "postcss": "^6.0.17",
     "postcss-calc": "^6.0.0",
     "postcss-easy-import": "^3.0.0",
     "postcss-loader": "^2.0.10",
@@ -97,10 +97,10 @@
     "url-loader": "^0.6.2",
     "vant-doc": "1.0.2",
     "vue": "^2.5.13",
-    "vue-loader": "^13.7.0",
+    "vue-loader": "^14.1.0",
     "vue-router": "^3.0.1",
     "vue-sfc-compiler": "^0.0.8",
-    "vue-style-loader": "^3.1.1",
+    "vue-style-loader": "^3.1.2",
     "vue-template-compiler": "^2.5.13",
     "vue-template-es2015-compiler": "^1.6.0",
     "webpack": "^3.10.0",
diff --git a/packages/sku/Sku.vue b/packages/sku/Sku.vue
index 475c86de3..7d503a2ab 100644
--- a/packages/sku/Sku.vue
+++ b/packages/sku/Sku.vue
@@ -66,6 +66,7 @@
               :quota-used="quotaUsed"
               :disable-stepper-input="disableStepperInput"
               :hide-stock="hideStock"
+              :custom-stepper-config="customStepperConfig"
             />
           </slot>
           <!-- sku-messages -->
@@ -159,6 +160,10 @@ export default create({
     messagePlaceholderMap: {
       type: Object,
       default: () => ({})
+    },
+    customStepperConfig: {
+      type: Object,
+      default: () => ({})
     }
   },
 
@@ -328,7 +333,15 @@ export default create({
       this.selectedNum = num;
     },
 
-    onOverLimit({ action, limitType, quota, quotaUsed }) {
+    onOverLimit(data) {
+      const { action, limitType, quota, quotaUsed } = data;
+      const { handleOverLimit } = this.customStepperConfig;
+
+      if (handleOverLimit) {
+        handleOverLimit(data);
+        return;
+      }
+
       if (action === 'minus') {
         Toast(this.$t('least'));
       } else if (action === 'plus') {
diff --git a/packages/sku/components/SkuStepper.vue b/packages/sku/components/SkuStepper.vue
index 08f8f197b..4c705a41d 100644
--- a/packages/sku/components/SkuStepper.vue
+++ b/packages/sku/components/SkuStepper.vue
@@ -12,7 +12,7 @@
       />
     </div>
     <div v-if="!hideStock" class="van-sku__stock">{{ $t('remain', stock) }}</div>
-    <div v-if="quota > 0" class="van-sku__quota">{{ $t('quota', quota) }}</div>
+    <div v-if="quotaText" class="van-sku__quota">{{ quotaText }}</div>
   </div>
 </template>
 
@@ -40,7 +40,8 @@ export default create({
     quota: Number,
     quotaUsed: Number,
     hideStock: Boolean,
-    disableStepperInput: Boolean
+    disableStepperInput: Boolean,
+    customStepperConfig: Object
   },
 
   data() {
@@ -69,6 +70,18 @@ export default create({
       }
       return this.skuStockNum;
     },
+    quotaText() {
+      const { quotaText } = this.customStepperConfig;
+      let text = '';
+
+      if (quotaText) {
+        text = quotaText;
+      } else if (this.quota > 0) {
+        text = this.$t('quota', this.quota);
+      }
+
+      return text;
+    },
     stepperLimit() {
       const quotaLimit = this.quota - this.quotaUsed;
       let limit;
diff --git a/packages/sku/constants.js b/packages/sku/constants.js
index 80b443ee6..0d83bd7ce 100644
--- a/packages/sku/constants.js
+++ b/packages/sku/constants.js
@@ -2,3 +2,7 @@ export const LIMIT_TYPE = {
   QUOTA_LIMIT: 0,
   STOCK_LIMIT: 1
 };
+
+export default {
+  LIMIT_TYPE
+};
diff --git a/packages/sku/index.js b/packages/sku/index.js
index 4c21c126c..76ad3e005 100644
--- a/packages/sku/index.js
+++ b/packages/sku/index.js
@@ -6,6 +6,7 @@ import SkuStepper from './components/SkuStepper';
 import SkuRow from './components/SkuRow';
 import SkuRowItem from './components/SkuRowItem';
 import skuHelper from './utils/skuHelper';
+import constants from './constants';
 
 Sku.SkuActions = SkuActions;
 Sku.SkuHeader = SkuHeader;
@@ -14,5 +15,6 @@ Sku.SkuStepper = SkuStepper;
 Sku.SkuRow = SkuRow;
 Sku.SkuRowItem = SkuRowItem;
 Sku.skuHelper = skuHelper;
+Sku.skuConstants = constants;
 
 export default Sku;
diff --git a/packages/tab/index.vue b/packages/tab/index.vue
index 92887be1a..0902398d7 100644
--- a/packages/tab/index.vue
+++ b/packages/tab/index.vue
@@ -14,10 +14,7 @@ export default create({
   mixins: [findParent],
 
   props: {
-    title: {
-      type: String,
-      required: true
-    },
+    title: String,
     disabled: Boolean
   },
 
diff --git a/packages/tabs/index.vue b/packages/tabs/index.vue
index ecf715702..11eb46034 100644
--- a/packages/tabs/index.vue
+++ b/packages/tabs/index.vue
@@ -1,5 +1,5 @@
 <template>
-  <div class="van-tabs" :class="[`van-tabs--${type}`]">
+  <div class="van-tabs" :class="`van-tabs--${type}`">
     <div
       ref="wrap"
       class="van-tabs__wrap"
@@ -21,7 +21,8 @@
           }"
           @click="onClick(index)"
         >
-          <span>{{ tab.title }}</span>
+          <van-node v-if="tab.$slots.title" :node="tab.$slots.title" />
+          <span v-else>{{ tab.title }}</span>
         </div>
       </div>
     </div>
@@ -35,11 +36,16 @@
 import { create } from '../utils';
 import { raf } from '../utils/raf';
 import { on, off } from '../utils/event';
+import VanNode from '../utils/node';
 import scrollUtils from '../utils/scroll';
 
 export default create({
   name: 'van-tabs',
 
+  components: {
+    VanNode
+  },
+
   props: {
     sticky: Boolean,
     active: {
@@ -69,6 +75,13 @@ export default create({
     };
   },
 
+  computed: {
+    // whether the nav is scrollable
+    scrollable() {
+      return this.tabs.length > this.swipeThreshold;
+    }
+  },
+
   watch: {
     active(val) {
       this.correctActive(val);
@@ -113,13 +126,6 @@ export default create({
     }
   },
 
-  computed: {
-    // whether the nav is scrollable
-    scrollable() {
-      return this.tabs.length > this.swipeThreshold;
-    }
-  },
-
   methods: {
     // whether to bind sticky listener
     scrollHandler(init) {
diff --git a/packages/utils/node.js b/packages/utils/node.js
new file mode 100644
index 000000000..929c056ce
--- /dev/null
+++ b/packages/utils/node.js
@@ -0,0 +1,10 @@
+export default {
+  name: 'van-node',
+  functional: true,
+  props: {
+    node: Array
+  },
+  render(h, ctx) {
+    return ctx.props.node;
+  }
+};
diff --git a/packages/vant-css/src/toast.css b/packages/vant-css/src/toast.css
index c5525ed13..ec646313e 100644
--- a/packages/vant-css/src/toast.css
+++ b/packages/vant-css/src/toast.css
@@ -16,7 +16,7 @@
   flex-direction: column;
   box-sizing: border-box;
   transform: translate3d(-50%, -50%, 0);
-  background-color: rgba(39, 39, 39, .7);
+  background-color: rgba(0, 0, 0, .7);
 
   &__overlay {
     position: fixed;
diff --git a/test/unit/specs/sku.spec.js b/test/unit/specs/sku.spec.js
index f78f6944f..499939444 100644
--- a/test/unit/specs/sku.spec.js
+++ b/test/unit/specs/sku.spec.js
@@ -1,4 +1,5 @@
 import Sku from 'packages/sku';
+import Toast from 'packages/toast';
 import { mount } from 'avoriaz';
 import { DOMChecker } from '../utils';
 import data from '../mock/sku';
@@ -155,6 +156,60 @@ describe('Sku', (done) => {
     });
   });
 
+  it('should toast custom error when change step value', (done) => {
+    wrapper = mount(Sku, {
+      attachToDocument: true,
+      propsData: {
+        value: true,
+        sku: data.sku,
+        goodsId: data.goods_id,
+        goods: goods,
+        quota: data.quota,
+        quotaUsed: data.quota_used,
+        customStepperConfig: {
+          quotaText: '单次限购100件',
+          handleOverLimit: (data) => {
+            const { action, limitType, quota } = data;
+
+            if (action === 'minus') {
+              Toast('至少选择一件商品');
+            } else if (action === 'plus') {
+              if (limitType === 0) {
+                Toast(`限购${quota}件`);
+              } else {
+                Toast('库存不够了~~');
+              }
+            }
+          }
+        }
+      }
+    });
+
+    // 点击减号
+    const minusBtn = wrapper.find('.van-stepper__minus')[0];
+    minusBtn.trigger('click');
+    wrapper.vm.$nextTick(() => {
+      const toastText = document.querySelector('.van-toast div');
+      expect(toastText.textContent).to.equal('至少选择一件商品');
+
+      // 手动修改购买数量
+      const stepperInput = wrapper.find('.van-stepper__input')[0];
+      stepperInput.element.value = 20;
+      stepperInput.trigger('input');
+      wrapper.vm.$nextTick(() => {
+        expect(+stepperInput.element.value).to.equal(data.quota - data.quota_used);
+
+        // 达到购买上限时，点击加号
+        const plusBtn = wrapper.find('.van-stepper__plus')[0];
+        plusBtn.trigger('click');
+        wrapper.vm.$nextTick(() => {
+          expect(toastText.textContent).to.equal(`限购${data.quota}件`);
+          done();
+        });
+      });
+    });
+  });
+
   it('should not render sku group when none_sku is true', (done) => {
     const newData = Object.assign({}, data);
     newData.sku.none_sku = true; // eslint-disable-line
diff --git a/yarn.lock b/yarn.lock
index 9c19d8ddc..9173ef502 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5525,6 +5525,14 @@ postcss@^6.0.0, postcss@^6.0.1, postcss@^6.0.11, postcss@^6.0.13, postcss@^6.0.1
     source-map "^0.6.1"
     supports-color "^5.1.0"
 
+postcss@^6.0.17:
+  version "6.0.17"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-6.0.17.tgz#e259a051ca513f81e9afd0c21f7f82eda50c65c5"
+  dependencies:
+    chalk "^2.3.0"
+    source-map "^0.6.1"
+    supports-color "^5.1.0"
+
 precinct@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/precinct/-/precinct-4.0.0.tgz#ce67108123b8ae7c156180fb3836c5e5de24654f"
@@ -7119,9 +7127,9 @@ vue-lazyload@^1.1.4:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/vue-lazyload/-/vue-lazyload-1.1.4.tgz#94dbb3fcb047f147f37900c0e22ad4fd478e31c4"
 
-vue-loader@^13.7.0:
-  version "13.7.0"
-  resolved "https://registry.yarnpkg.com/vue-loader/-/vue-loader-13.7.0.tgz#4d6a35b169c2a0a488842fb95c85052105fa9729"
+vue-loader@^14.1.0:
+  version "14.1.0"
+  resolved "https://registry.yarnpkg.com/vue-loader/-/vue-loader-14.1.0.tgz#ae31d62a11421061fca8bac30cbc15875df886d3"
   dependencies:
     consolidate "^0.14.0"
     hash-sum "^1.0.2"
@@ -7134,7 +7142,7 @@ vue-loader@^13.7.0:
     resolve "^1.4.0"
     source-map "^0.6.1"
     vue-hot-reload-api "^2.2.0"
-    vue-style-loader "^3.0.0"
+    vue-style-loader "^4.0.1"
     vue-template-es2015-compiler "^1.6.0"
 
 vue-router@^3.0.1:
@@ -7147,16 +7155,16 @@ vue-sfc-compiler@^0.0.8:
   dependencies:
     babel-polyfill "^6.26.0"
 
-vue-style-loader@^3.0.0:
-  version "3.0.3"
-  resolved "https://registry.yarnpkg.com/vue-style-loader/-/vue-style-loader-3.0.3.tgz#623658f81506aef9d121cdc113a4f5c9cac32df7"
+vue-style-loader@^3.1.2:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/vue-style-loader/-/vue-style-loader-3.1.2.tgz#6b66ad34998fc9520c2f1e4d5fa4091641c1597a"
   dependencies:
     hash-sum "^1.0.2"
     loader-utils "^1.0.2"
 
-vue-style-loader@^3.1.1:
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/vue-style-loader/-/vue-style-loader-3.1.1.tgz#74fdef91a81d38bc0125746a1b5505e62d69e32c"
+vue-style-loader@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/vue-style-loader/-/vue-style-loader-4.0.1.tgz#252300d32eb97e83c1a1cb5b2029e2d8c3adcf9f"
   dependencies:
     hash-sum "^1.0.2"
     loader-utils "^1.0.2"