vue3 全局组件/局部组件

<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>vue3组件</title><scri

tianmeng1999

3277人浏览 · 2020-11-19 15:57:28

tianmeng1999 · 2020-11-19 15:57:28 发布

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>vue3组件</title>
    <script src="./vue3.js"></script>
</head>
<body>
    <div id="app">
        {{msg}}
        <br>
        ----------
        <br>
        全局组件：<child></child>
        <br>
        局部组件：<comp></comp>
    </div>
    <template id="comp">
        子组件内容 {{msg}} {{count}}
        <button @click="count++">add</button>
    </template>
    <script>
        const {createApp} = Vue
        const comp = {
            data:()=>({
                msg:'子组件',
                count:0
            }),
            template:"#comp",
            methods:{ }
        }
        const options = {
            data:()=>({
                msg:'vue3组件'
            }),
            components:{
                comp
            }
        }
        
        const app = createApp(options)
        
        // 创建一个全局组件
        app.component('child',comp)
  
        app.mount('#app')


    </script>
</body>
</html>

在这里插入图片描述

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vue 表单验证

1、6位小写字母和数字必须包含两个字母rules: [{ required: true, message: "XXX不能为空", trigger: "blur" },{ max: 6, message: "最大长度为6位字符", trigger: "blur" },{pattern: /^(?=(?:[^a-z]*[a-z]){2})[a-z0-9]{6,6}$/, //不连续的两位字母// /^