文章目录
- 1 数据代理
- 1.1 回顾Object.defineproperty方法
- 1.2 何为数据代理
- 1.3 Vue中的数据代理
- 2 事件处理
- 2.1 事件的基本使用
- 2.2 事件修饰符
- 2.3 键盘事件
1 数据代理
1.1 回顾Object.defineproperty方法
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>回顾Object.defineproperty方法</title>
</head>
<body>
<script type="text/javascript" >javascript">
let number = 18
let person = {
name:'张三',
sex:'男',
}
Object.defineProperty(person,'age',{
get(){
console.log('有人读取age属性了')
return number
},
set(value){
console.log('有人修改了age属性, 且值是',value)
number = value
}
})
console.log(person)
</script>
</body>
</html>
1.2 何为数据代理
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>何为数据代理</title>
</head>
<body>
<script type="text/javascript" >javascript">
let obj = {x: 100}
let obj2 = {y: 200}
Object.defineProperty(obj2,'x',{
get(){
return obj.x
},
set(value){
obj.x = value
}
})
</script>
</body>
</html>
1.3 Vue中的数据代理
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Vue中的数据代理</title>
<script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
<div id="root">
<h2>学校名称:{{name}}</h2>
<h2>学校地址:{{address}}</h2>
</div>
</body>
<script type="text/javascript">javascript">
Vue.config.productionTip = false
const vm = new Vue({
el:'#root',
data:{
name:'尚硅谷',
address:'宏福科技园'
}
})
</script>
</html>
2 事件处理
2.1 事件的基本使用
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>事件的基本使用</title>
<script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
<div id="root">
<h2>欢迎来到{{name}}学习</h2>
<button @click="showInfo1">点我提示信息1(不传参)</button>
<button @click="showInfo2($event, 66)">点我提示信息2(传参)</button>
</div>
</body>
<script type="text/javascript">javascript">
Vue.config.productionTip = false
const vm = new Vue({
el:'#root',
data:{
name:'尚硅谷',
},
methods:{
showInfo1(event){
alert('同学你好!')
},
showInfo2(event, number){
console.log(event, number)
alert('同学你好!!')
}
}
})
</script>
</html>
2.2 事件修饰符
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>事件修饰符</title>
<script type="text/javascript" src="../js/vue.js"></script>
<style>
*{
margin-top: 20px;
}
.demo1{
height: 50px;
background-color: skyblue;
}
.box1{
padding: 5px;
background-color: skyblue;
}
.box2{
padding: 5px;
background-color: orange;
}
.list{
width: 200px;
height: 200px;
background-color: peru;
overflow: auto;
}
li{
height: 100px;
}
</style>
</head>
<body>
<div id="root">
<h2>欢迎来到{{name}}学习</h2>
<a href="http://www.atguigu.com" @click.prevent="showInfo">点我提示信息</a>
<div class="demo1" @click="showInfo">
<button @click.stop="showInfo">点我提示信息</button>
</div>
<button @click.once="showInfo">点我提示信息</button>
<div class="box1" @click.capture="showMsg(1)">
div1 输出: 1
<div class="box2" @click="showMsg(2)">
div2 输出: 1 2
</div>
</div>
<div class="demo1" @click.self="showInfo">
<button @click="showInfo">点我提示信息</button>
</div>
<ul @wheel.passive="demo" class="list">
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
</ul>
</div>
</body>
<script type="text/javascript">javascript">
Vue.config.productionTip = false
new Vue({
el:'#root',
data:{
name:'尚硅谷'
},
methods:{
showInfo(e){
alert('同学你好!')
console.log(e.target)
},
showMsg(msg){
console.log(msg)
},
demo(){
for (let i = 0; i < 100000; i++) {
console.log('#')
}
console.log('累坏了')
}
}
})
</script>
</html>
2.3 键盘事件
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>键盘事件</title>
<script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
<div id="root">
<h2>欢迎来到{{name}}学习</h2>
<input type="text" placeholder="按下回车提示输入" @keydown.huiche="showInfo">
</div>
</body>
<script type="text/javascript">javascript">
Vue.config.productionTip = false
Vue.config.keyCodes.huiche = 13
new Vue({
el:'#root',
data:{
name:'尚硅谷'
},
methods: {
showInfo(e){
console.log(e.target.value)
}
},
})
</script>
</html>