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入门vue(1-10)

news 2025/7/22 1:27:24

正确学习方式：视频->动手实操->压缩提取->记录表述

1基础结构

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title><script src="./js/vue.js"></script>
</head>
<body><div class="root"><h1>get frame prefer to look for what you got</h1><h2>so  you know you learn a lot from {{company}}</h2></div><script>Vue.config.productionTip = false //关闭提醒const vm = new Vue({el:'.root',data:{company:'123'}})</script>
</body>
</html>

2容器和实例的关系
容器和实例：一一对应；一个实例对应一个容器
容器先到先得实例
区分：不是说mustache和实例的关系

3组织vue启动时生成提示生产信息
Vue.config.productionTip = false;

4注意区分js表达式和js代码（语句）
js表达式：a,a+b,x===y?‘a’:‘b’;
js代码：if(){} ,for(){} ,while(){}

5开发过程使用开发版本vue(vue.js)可以在console报错方便修改

模板语法：1插值语法，2指令语法

< 指令语法>{{插值语法}}<>

插值举例{{}} :常用于标签内,eg:< h1>{{content}}< /h1>
指令语法举例：v-bind ：多用于绑定标签属性
v-bind==:

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title><script src="./js/vue.js"></script>
</head>
<body><div class="test"><h1>你好{{name}}</h1><a v-bind:href="url">点击我去和百度聊天</a><!-- v-bind添加之后 url 当作表达式执行 --><a :href="url2">点我去和bing聊天</a></div><script>Vue.config.productionTip = falsenew Vue({el:'.test',data:{name:'帅小伙',url:'http://www.baidu.com',url2:'http://www.bing.com'}})</script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title><script src="./js/vue.js"></script>
</head>
<body><div class="test"><h1>你好{{name}}</h1><h1>wow {{school.name}}</h1><a v-bind:href="url">点击我去和百度聊天</a><!-- v-bind添加之后 url 当作表达式执行 --><a :href="url2">点我去和bing聊天</a></div><script>Vue.config.productionTip = falsenew Vue({el:'.test',data:{name:'帅小伙',school:{name:'最帅小伙'},url:'http://www.baidu.com',url2:'http://www.bing.com'}})</script>
</body>
</html>

数据绑定详解：1单向绑定(v-bind)，2双向绑定(v-model)

双向绑定（能产生交互）只能用在表单类元素，输入元素，有value值
在这里插入图片描述

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title><script src="./js/vue.js"></script>
</head>
<body><div id="root"><!-- 单项绑定：<input type="text" v-bind:value="name"><br> -->双向绑定: <input type="text" v-model:value="name"> //v-model='name'</div><script>Vue.config.productionTip = false;new Vue({el:'#root',data:{name:'拜登老妖精'}})</script></body>
</html>

el&data的两种写法：
连接容器与实例的两种方法：1el,2mount

eg:el两种方式

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title><script src="./js/vue.js"></script>
</head>
<body><div id="root"><h1>你好，{{name}}</h1></div><script>Vue.config.productionTip = false const v = new Vue({//el:'#root',data:{name:'广东'}})setTimeout(() => {v.$mount('#root')}, 2000);</script>
</body>
</html>

data两种方式

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title><script src="./js/vue.js"></script>
</head>
<body><div id="root"><h1>你好，{{name}}</h1></div><script>Vue.config.productionTip = false const v = new Vue({el:'#root',// data:{//     name:'普通data'// }data:function(){return{name:'函数式data666'}}})</script>
</body>
</html>