<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>发送AJAX请求</title>
<style>
.current{
background-color:#ccc;
}
</style>
<script src="js/vue.js"></script>
<script src="js/vue-resource.min.js"></script>
<script>
window.onload=function(){
new Vue({
el:'#itany',
data:{
keyword:'',
myData:[],
now:-1 //当前选中项的索引
},
methods:{
getData(e){
//如果按方向键上、下，则不发请求
if(e.keyCode==38||e.keyCode==40)
return;
this.$http.jsonp('https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su',{
params:{
wd:this.keyword
},
jsonp:'cb'
}).then(resp => {
console.log(resp)
this.myData=resp.data.s;
});
},
changeDown(){
this.now++;
this.keyword=this.myData[this.now];
if(this.now==this.myData.length){
this.now=-1;
}
},
changeUp(){
this.now--;
this.keyword=this.myData[this.now];
if(this.now==-2){
this.now=this.myData.length-1;
}
}
}
});
}
</script>
</head>
<body>
<div id="itany">
<input type="text" v-model="keyword" @keyup="getData($event)" @keydown.down="changeDown" @keydown.up.prevent="changeUp">
<ul>
<li v-for="(value,index) in myData" :class="{current:index==now}">
{{value}}
</li>
</ul>
<p v-show="myData.length==0">暂无数据....</p>
</div>
</body>
</html>
