Vue之仿百度搜索框

来源：互联网发布：同花顺智能交易软件编辑：程序博客网时间：2024/05/20 12:48

先上代码

<!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <title></title>    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">    <meta name="apple-mobile-web-app-capable" content="yes">    <meta name="apple-mobile-web-app-status-bar-style" content="black">    <style>        .gray{            background: #ccc;        }    </style>    <script src="vue.js"></script>    <script src="vue-resource.js"></script>    <script>        window.onload=function(){            new Vue({                el:'body',                data:{                    myData:[],                    t1:'',                    now:-1                },                methods:{                    get:function(ev){                        if(ev.keyCode==38 || ev.keyCode==40)return;                        this.$http.jsonp('https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su',{                            wd:this.t1                        },{                            jsonp:'cb'                        }).then(function(res){                            this.myData=res.data.s;                        },function(){                                                    });                    },                    changeDown:function(){                        this.now++;                        if(this.now==this.myData.length)this.now=-1;                        this.t1=this.myData[this.now];                    },                    changeUp:function(){                        this.now--;                        if(this.now==-2)this.now=this.myData.length-1;                        this.t1=this.myData[this.now];                    }                }            });        };    </script></head><body>    <div id="box">        <input type="text" v-model="t1" @keyup="get($event)" @keydown.down="changeDown()" @keydown.up.prevent="changeUp()">        <ul>            <li v-for="value in myData" :class="{gray:$index==now}">                {{value}}            </li>        </ul>        <p v-show="myData.length==0">暂无数据...</p>    </div></body></html>

知识点：

1.使用v-show:数据长度为0的时候显示‘暂无数据’
2.使用jsonp获取数据

3.键盘事件keydown.down keydown.up按键向上向下的按键

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