有时候为了展示,需要往每条数组中添加一个值为boolen类型的元素;
首先要循环这个数组,其次添加元素,然后定义元素的boolen值
代码如下:
wxml代码:
<view wx:for="{{arr}}" wx:key="{{item.index}}" class='list'>
<view wx:if = "{{item.show}}" class='listChild'>999+</view>
<view wx:else>{{item.num}}</view>
</view>
wxcss代码:
.list{
width: 100%;
margin: 0 auto;
border: 1rpx solid #eee;
color: #3492b7;
text-align: center;
}
js代码:
Page({
data: {
arr:[
{ "num": "666" },
{ "num": "888" },
{ "num": "555" },
{ "num": "999" },
{ "num": "1024" }
]
},
onShow:function(){
const a = this.data.arr;
const b = a.map(function (el) {
el.newel = 'show';
el.show = false
var number = el.num = el.num
if (number > 999) {
//数值超过999的显示999+
el.show = true
}
console.log(a)
return (el);
})
this.setData({
arr:a
})
}
})