vue开发:vue实现百度搜索下拉提示功能

vue

 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>

以上是 vue开发:vue实现百度搜索下拉提示功能 的全部内容, 来源链接: utcz.com/z/377743.html

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