[bugfix] Button click event

example/pages/actionsheet/index.wxml

@@ -1,5 +1,5 @@
 <view class="van-buttons" style="margin-top: 30vh;">
-  <van-button bind:buttonclick="openActionsheet">
+  <van-button bind:tap="openActionsheet">
     Actionsheet
   </van-button>
 </view>

example/pages/popup/index.wxml

@@ -1,16 +1,16 @@
-<van-button class="van-button" bind:buttonclick="togglePopup">
+<van-button class="van-button" bind:tap="togglePopup">
   弹出popup
 </van-button>
-<van-button class="van-button" bind:buttonclick="toggleTopPopup">
+<van-button class="van-button" bind:tap="toggleTopPopup">
   从顶部弹出popup
 </van-button>
-<van-button class="van-button" bind:buttonclick="toggleBottomPopup">
+<van-button class="van-button" bind:tap="toggleBottomPopup">
   从底部弹出popup
 </van-button>
-<van-button class="van-button" bind:buttonclick="toggleLeftPopup">
+<van-button class="van-button" bind:tap="toggleLeftPopup">
   从左边弹出popup
 </van-button>
-<van-button class="van-button" bind:buttonclick="toggleRightPopup">
+<van-button class="van-button" bind:tap="toggleRightPopup">
   从右边弹出popup
 </van-button>
 

example/pages/toast/index.wxml

@@ -1,31 +1,31 @@
 <import src="/dist/toast/index.wxml" />
 
 <view class="container">
-  <van-button bind:buttonclick="showToast">
+  <van-button bind:tap="showToast">
     显示toast
   </van-button>
 
-  <van-button bind:buttonclick="showIconToast">
+  <van-button bind:tap="showIconToast">
     显示 Icon 图标的toast
   </van-button>
 
-  <van-button bind:buttonclick="showImageToast">
+  <van-button bind:tap="showImageToast">
     自定义图片作为图标的toast
   </van-button>
 
-  <van-button bind:buttonclick="showLoadingToast">
+  <van-button bind:tap="showLoadingToast">
     显示 Loading toast
   </van-button>
 
-  <van-button bind:buttonclick="showOnlyIcon">
+  <van-button bind:tap="showOnlyIcon">
     只显示图标的toast
   </van-button>
 
-  <van-button bind:buttonclick="showEverToast">
+  <van-button bind:tap="showEverToast">
     不消失的的toast
   </van-button>
 
-  <van-button bind:buttonclick="showLoading">
+  <van-button bind:tap="showLoading">
     显示 Loading
   </van-button>
 </view>

example/pages/toptips/index.wxml

@@ -1,17 +1,17 @@
 <view style="margin-top: 30vh;">
-  <van-button bind:buttonclick="showTopTips">
+  <van-button bind:tap="showTopTips">
     显示toptips，声明式调用
   </van-button>
 </view>
 
 <view style="margin-top: 30px;">
-  <van-button bind:buttonclick="showTopTips2">
+  <van-button bind:tap="showTopTips2">
     显示toptips，命令式调用
   </van-button>
 </view>
 
 <view style="margin-top: 30px;">
-  <van-button bind:buttonclick="showTopTips3">
+  <van-button bind:tap="showTopTips3">
     显示toptips，持续一秒
   </van-button>
   </view>

packages/dialog/index.wxml

@@ -25,7 +25,7 @@
           data-type="{{ item.type }}"
           data-open-type="{{ item.openType }}"
           open-type="{{ item.openType }}"
-          bind:buttonclick="handleButtonClick"
+          bind:tap="handleButtonClick"
           bind:getuserinfo="handleUserInfoResponse"
           bind:getphonenumber="handlePhoneResponse"
           bind:opensetting="handleOpenSettingResponse"