09.1.VUE学习之watch监听属性变化实现类百度搜索栏功能ajax异步请求数据,返回数组

09.1html里

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>vue</title>
    <link rel="stylesheet" href="">
    <!--<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>-->
    <script type="text/javascript" src="../js/vue.js"></script>
    <script type="text/javascript" src="../vue/node_modules/axios/dist/axios.js"></script>
    <script type="text/javascript" src="../vue/node_modules/lodash/lodash.js"></script>
</head>
<body>
<div id="vue">
    <!--当input里的值改变时,会改变data里的word-->
    <input type="text" v-model="word">
    <h1>
        <!--拿到data里的result里的值-->
    </h1>

    <table border="1">
        <tr>
            <th>序号</th>
            <th>编号</th>
            <th>标题</th>
            <th>价格</th>
            <th>数量</th>
            <th>合计</th>
        </tr>
        <tbody>

        <!--拿到data里的result里的值-->
        <tr v-for="(v,k) in result">
            <td>{{k}}</td>
            <td>{{v.id}}</td>
            <td>{{v.title}}</td>
            <td>{{v.price}}</td> <!--每次都取name值,不变-->
            <td>{{v.num}}</td> <!--每次都取name值,不变-->
            <td>{{v.num*v.price}}</td> <!--每次都取name值,不变-->
        </tr>
        总价格:{{total}}
        </tbody>
    </table>
</div>
</body>
<script type="text/javascript">
    var app=new Vue({
        el:'#vue',
        watch:{ //监听data里的word的变化
            //			拿到input里的新值和旧值
            word:_.debounce(
                    function(new_v,old_v){
                        //		        console.log(new_v+'=>'+old_v);
                        var url = '9.1.php?word='+new_v;
                        //				ajax get异步请求
                        axios.get(url).then(function(response){
                            console.log(response);
                            console.log(response.data.total);
                            app.total = response.data.total //赋值给data里的result
                            app.result = response.data.content //赋值给data里的result
                        });
                    },1000 //1秒后执行
            )
        },
        data:{
            word:'',
            result:'',
            total:0,
        }
    });
</script>
</html>

09.1.php里

<?php

//print_r('要搜索的内容是:'.$_GET['word']);

$data = [
           'total'=>0,
            'content'=>array(
                ['id' => 1, 'title' => 'iphone7Plus', 'price' => 300, 'num' => 3,],
                ['id' => 2, 'title' => 'hdcms系统', 'price' => 1999, 'num' => 9],
            ),

];
$total=0;
foreach($data['content'] as $k=>$v){
    $total+=$v['price']*$v['num']; //计算总价
}
$data['total']=$total;
echo json_encode($data);
?>

效果:

posted @ 2019-01-08 09:55  HaimaBlog  阅读(285)  评论(0)  编辑  收藏  举报