props验证

2022-01-05 22:50:40
<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Document</title>

</head>

<body>

    <div id="example" v-once>

        <app :showif="showif"></app>

    </div>

    <script type="text/javascript" src="vue.js"></script>

    <script type="text/javascript">

        Vue.component('app',{

            props:{

                showif: Boolean

            },

            template:'<div v-show="showif">你妹夫</div>',

        })

        var app = new Vue({

            el:'#example',

            data:{

                showif : true

            }

        })

    </script>

</body>

</html>
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