data数据处理
WXML:
<!--index.wxml-->
<view class="container">
<view wx:for="{{list}}" wx:key="this" style="padding: 10px 0;border-bottom: 1px solid #ddd;">
<view>
{{index+1}}、{{item.name}}
</view>
<view class="textright font12" style="color: #2A53CD;">
<text bindtap="remove" data-index="{{index}}" class="marlr10">删除</text>
<text bindtap="edit" data-index="{{index}}" >修改</text>
</view>
</view>
<button class="martop20" bindtap="add_before">
向前插入数组
</button>
<button class="martop20" bindtap="add_after">
向后插入数组
</button>
<button class="martop20" bindtap="clear">
清空数组
</button>
</view>
WXSS:
/**index.wxss**/
.userinfo {
display: flex;
flex-direction: column;
align-items: center;
}
.userinfo-avatar {
width: 128rpx;
height: 128rpx;
margin: 20rpx;
border-radius: 50%;
}
.userinfo-nickname {
color: #aaa;
}
.usermotto {
margin-top: 200px;
}
JS:
//index.js
//获取应用实例
var app = getApp()
Page({
data: {
list:[{
id:1,
name:'应季鲜果',
count:1
},{
id:2,
name:'精致糕点',
count:6
},{
id:3,
name:'全球美食烘培原料',
count:12
},{
id:4,
name:'无辣不欢生猛海鲜',
count:5
}]
},
//向前增加数据
add_before:function (){
//要增加的数组
var newarray = [{
id:6,
name:'向前增加数据--'+new Date().getTime() ,
count:89
}];
this.data.list = newarray.concat(this.data.list);
this.setData({
'list':this.data.list
});
},
//向后增加数据
add_after:function (){
//要增加的数组
var newarray = [{
id:5,
name:'向后增加数据--'+new Date().getTime() ,
count:89
}];
this.setData({
'list':this.data.list.concat(newarray)
});
},
//删除
remove:function (e){
var dataset = e.target.dataset;
var Index = dataset.index; //拿到是第几个数组
this.data.list.splice(Index,1);
this.setData({
list:this.data.list
});
},
//修改
edit:function (e){
var dataset = e.target.dataset;
var Index = dataset.index; //拿到是第几个数组
this.data.list[Index].name = '修改了内容'+new Date().getTime();
this.setData({
list:this.data.list
});
},
//清空
clear:function (){
this.setData({
list:[]
});
}
})
