[new feature] Stepper: add show-plus & show-minus prop (#1839)

packages/stepper/README.md

@@ -55,6 +55,8 @@
 | disable-input | 是否禁用输入框 | `Boolean` | `false` |
 | async-change | 异步变更，为 `true` 时input值不变化，仅触发事件 | `Boolean` | `false` |
 | input-width | 输入框宽度，须指定单位 | `String` | `30px` |
+| show-plus | 是否显示增加按钮 | `Boolean` | `true` |
+| show-minus | 是否显示减少按钮 | `Boolean` | `true` |
 
 ### Events
 

packages/stepper/index.ts

@@ -27,6 +27,14 @@ VantComponent({
     step: {
       type: null,
       value: 1
+    },
+    showPlus: {
+      type: Boolean,
+      value: true
+    },
+    showMinus: {
+      type: Boolean,
+      value: true
     }
   },
 

packages/stepper/index.wxml

@@ -3,6 +3,7 @@
 <view class="van-stepper custom-class">
   <view
     class="minus-class {{ utils.bem('stepper__minus', { disabled: minusDisabled }) }}"
+    style="{{ showMinus ? '' : 'display: none;' }}"
     hover-class="van-stepper__minus--hover"
     hover-stay-time="70"
     bind:tap="onMinus"
@@ -20,6 +21,7 @@
   />
   <view
     class="plus-class {{ utils.bem('stepper__plus', { disabled: plusDisabled }) }}"
+    style="{{ showPlus ? '' : 'display: none;' }}"
     hover-class="van-stepper__plus--hover"
     hover-stay-time="70"
     bind:tap="onPlus"