vue实现百度搜索下拉提示功能实例
时间：2020-12-07 17:26:07|栏目：vue|点击： 次
这段代码用到vuejs和vue-resouece。实现对接智能提示接口，并通过上下键选择提示项，按enter进行搜索
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script type="text/javascript" src="vue.js"></script>
<script type="text/javascript" src="vue-resource.js"></script>
<script type="text/javascript">
window.onload = function() {
var app = new Vue({
el: '#box',
data: {
myData: [],
tt: '',
now: -1
},
methods: {
get: function(e) {
// 请求限制 按了上下箭头
if (e.keyCode === 38 || e.keyCode === 40) {
return
}
// enter跳转
if (e.keyCode === 13) {
window.open('https://www.baidu.com/s?wd=' + this.tt);
this.tt = '';
}
this.$http.jsonp('https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su', {
wd: this.tt
}, {
jsonp: 'cb'
}).then(function(res) {
// 请求成功
this.myData = res.data.s;
this.now = -1;
}, function(res) {
// 请求失败
console.log(res.status)
})
},
changeDown: function() {
this.now++;
// 到了最后一个选项
if (this.now === this.myData.length) {
this.now = -1;
}
this.tt = this.myData[this.now]
},
changeUp: function() {
this.now--;
// 到了第一个选项
if (this.now === -2) {
this.now = this.myData.length - 1;
}
this.tt = this.myData[this.now]
}
}
})
}
</script>
<style type="text/css">
.gray {
background: gray
}
</style>
</head>
<body>
<!-- 百度下拉接口 -->
<div id="box">
<input type="text" v-model="tt" name="" @keyup="get($event)" @keydown.down="changeDown()" @keydown.up="changeUp()">
<ul>
<li v-for="(item, index) in myData" :class="{gray:index===now}">{{item}}</li>
</ul>
</div>
</body>
</html>
效果图：
这个ajax请求没有做节流，很多时候需要限制ajax频繁请求，可以小改一下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script type="text/javascript" src="vue.js"></script>
<script type="text/javascript" src="vue-resource.js"></script>
<script type="text/javascript">
window.onload = function() {
var app = new Vue({
el: '#box',
data: {
myData: [],
tt: '',
now: -1
},
methods: {
get: function(e) {
// 请求限制 按了上下箭头
if (e.keyCode === 38 || e.keyCode === 40) {
return
}
// enter跳转
if (e.keyCode === 13) {
window.open('https://www.baidu.com/s?wd=' + this.tt);
this.tt = '';
}
// 限制频繁请求
this.throttle(this.getData,window)
},
changeDown: function() {
this.now++;
// 到了最后一个选项
if (this.now === this.myData.length) {
this.now = -1;
}
this.tt = this.myData[this.now]
},
changeUp: function() {
this.now--;
// 到了第一个选项
if (this.now === -2) {
this.now = this.myData.length - 1;
}
this.tt = this.myData[this.now]
},
// 把请求单独拿出来
getData() {
this.$http.jsonp('https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su', {
wd: this.tt
}, {
jsonp: 'cb'
}).then(function(res) {
// 请求成功
this.myData = res.data.s;
this.now = -1;
}, function(res) {
// 请求失败
console.log(res.status)
})
},
// 节流函数
throttle(method,context){
clearTimeout(method.tId);
method.tId=setTimeout(function(){
method.call(context);
},300);
}
}
})
}
</script>
<style type="text/css">
.gray {
background: gray
}
</style>
</head>
<body>
<!-- 百度下拉接口 -->
<div id="box">
<input type="text" v-model="tt" name="" @keyup="get($event)" @keydown.down="changeDown()" @keydown.up="changeUp()">
<ul>
<li v-for="(item, index) in myData" :class="{gray:index===now}">{{item}}</li>
</ul>
</div>
</body>
</html>
