Implementation of WeChat applet tabs effect-Mini Program Development-php.cn

Implementation of WeChat applet tabs effect

高洛峰

Release： 2017-03-24 13:43:23

Original

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WeChat Mini Program tabs tab effect

Foreword:

Recently, WeChat application accounts are in full swing and very popular, but you can also find search keywords and various websites appearing. All are explained in WeChat’s official documents. Just in time to catch up with this craze, I read through the technical documentation of the mini program in the past few days, and then started writing the case directly. Many components have been packaged inside WeChat, and I just found that there is no tab effect, so I just studied it in the past two days. The idea is as follows:

1. First, when you click on the navigation, you need two variables. One is to store the current click style class, and the other is the default style class for other navigations.

2. The tab content list is also Two variables are needed, one stores the current display block, and the other stores other hidden default blocks

3. Use trinocular operation to obtain the navigation index by clicking, and judge whether to add the current class based on the index [Note, here I Bind the click event to the parent navigation bar and obtain the event object properties triggered by the click through the target object]

Please combine the following renderings:

微信小程序 tabs选项卡效果的实现

Next, view the source code directly:

demo.wxml:

<view class="tab">
<view class="tab-left" bindtap="tabFun">
 <view class="{{tabArr.curHdIndex==&#39;0&#39;? &#39;active&#39; : &#39;&#39;}}" id="tab-hd01" data-id="0">tab-hd01</view>
 <view class="{{tabArr.curHdIndex==&#39;1&#39;? &#39;active&#39; : &#39;&#39;}}" id="tab-hd02" data-id="1">tab-hd01</view>
 <view class="{{tabArr.curHdIndex==&#39;2&#39;? &#39;active&#39; : &#39;&#39;}}" id="tab-hd03" data-id="2">tab-hd01</view>
 <view class="{{tabArr.curHdIndex==&#39;3&#39;? &#39;active&#39; : &#39;&#39;}}" id="tab-hd04" data-id="3">tab-hd01</view>
</view>
 
<view class="tab-right">
 <view class="right-item {{tabArr.curBdIndex==&#39;0&#39;? &#39;active&#39; : &#39;&#39;}}">tab-bd01</view>
 <view class="right-item {{tabArr.curBdIndex==&#39;1&#39;? &#39;active&#39; : &#39;&#39;}}">tab-bd02</view>
 <view class="right-item {{tabArr.curBdIndex==&#39;2&#39;? &#39;active&#39; : &#39;&#39;}}">tab-bd03</view>
 <view class="right-item {{tabArr.curBdIndex==&#39;3&#39;? &#39;active&#39; : &#39;&#39;}}">tab-bd04</view>
</view>
</view>

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demo.js:

Page( {
data: {
 tabArr: {
  curHdIndex: 0,
  curBdIndex: 0
 },
},
tabFun: function(e){
 //获取触发事件组件的dataset属性
 var _datasetId=e.target.dataset.id;
 console.log("----"+_datasetId+"----");
 var _obj={};
 _obj.curHdIndex=_datasetId;
 _obj.curBdIndex=_datasetId;
 this.setData({
  tabArr: _obj
 });
},
onLoad: function( options ) {
 alert( "------" );
}
});

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demo. wxss:

.tab{
 display: flex;
 flex-direction: row;
}
.tab-left{
 width: 200rpx;
 line-height: 160%;
 border-right: solid 1px gray;
}
.tab-left view{
 border-bottom: solid 1px red;
}
.tab-left .active{
 color: #f00;
}
.tab-right{
 line-height: 160%;
}
.tab-right .right-item{
 padding-left: 15rpx;
 display: none;
}
.tab-right .right-item.active{
 display: block;
}

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The final demonstration effect is as follows:

微信小程序 tabs选项卡效果的实现