Vue-列表渲染-过滤应用

发布于 2020-02-26  258 次阅读 

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>Examples</title>
<meta name="keywords" content="">
<link href="" rel="stylesheet">

<script type="text/javascript" src="lib/vue.js"></script>
</head>
<body>
    <div id="box">

    	<input type="text" v-model="mytext" @input="handleInput()"/>
        
<!--         <ul>
            <li v-for="data in datalist" :key="data">
                {{data}}
            </li>
        </ul> -->


        <ul>
            <li v-for="data in computedDatalist" :key="data">
                {{data}}
            </li>
        </ul>
    </div>

    <script type="text/javascript">
            
        
        var vm = new Vue({
            el:"#box",
            data:{
                datalist:["aaa","bbb","ccc","ddd","add","cee","eee"],
                // list:["aaa","bbb","ccc","ddd","add","cee","eee"],
                mytext:""
            },

            methods:{
                // handleInput(){
                //     console.log(this.mytext);
                //     //filter ES5
                    
                //     this.datalist = this.list.filter((item)=>item.indexOf(this.mytext)>-1);
                // }
            },

            computed:{
                computedDatalist(){
                    return this.datalist.filter((item)=>item.indexOf(this.mytext)>-1);
                }
            }

        })


            //计算属性 基于依赖重新计算，用在v-for
            //filter 不影响原数组

            var arr = ["aaa","bab","ccc"]

            var newarr = arr.filter((item)=>item.indexOf("a")>-1);

            console.log(newarr,arr);
    </script>
</body>
</html>

 

注错之当