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Now let’s take a look at the data monitoring event $watch in vue,
js code:
new Vue({
el:"#div",
data:{
arr:[1,2,3]
}
}).$watch("arr",function () {
alert("数据改变了")
})html code:
{{arr}}
This is the monitoring of the array. We are the same for json, but we have to give it a deep monitoring, the third parameter of $watch is {deep: true}.
The data interaction in angular includes $http. Similarly for vue, we also have data interaction, including post, get and jsonp methods.
We are doing a simple Baidu search function here
css code:
a{
text-decoration: none;
color: black;
}
#div{
text-align: center;
padding-top: 50px;
}
input{
height: 25px;
width: 500px;
border-radius: 5px;
outline: none;
}
ul{
margin-left:470px;
margin-top: 0;
}
li{
height: 25px;
text-align: left;
border:1px solid gray;
list-style: none;
width: 500px;
}
js code:
new Vue({
el:"#div",
data:{
msg:" ",
arr:[]
},
methods:{get:function () {this.$http.jsonp('',{
wd:this.msg
},{
jsonp: 'cb'}).then(function(res){this.arr=res.data.s
},function(s){
console.log(s);
});
}
}
})html Code:
Such a simple small case is ready.
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