vue3-hi
<!DOCTYPE html>
<html lang="zh">
<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">
<script src="./js/v3.2.8/vue.global.prod.js"></script>
<title>Document</title>
</head>
<body>
<div id="app">
<p>{{msg}}</p>
</div>
<script>
Vue.createApp({
data() {
return {
msg: "hi"
}
},
}).mount("#app")
</script>
</body>
</html>
vue三种操作
操作文本、属性、事件
<!DOCTYPE html>
<html lang="zh">
<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">
<script src="./js/v3.2.8/vue.global.prod.js"></script>
<title>Document</title>
</head>
<body>
<!-- -->
<div id="app">
<h1 v-bind:title="tit" v-text="msg" v-on:click="showdata"></h1>
</div>
<script>
// 如何操作文本、属性、事件
Vue.createApp({
data() {
return {
msg: "文本显示",
tit: "文本绑定"
}
},
methods: {
showdata() {
alert("操作事件")
}
}
}).mount("#app")
</script>
</body>
</html>
三、计数器自加和自减
<!DOCTYPE html>
<html lang="zh">
<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">
<script src="./js/v3.2.8/vue.global.prod.js"></script>
<title>Document</title>
</head>
<body>
<!-- -->
<div id="app">
<h1 v-bind:title="tit" v-text="msg" v-on:click="showdata"></h1>
<button v-on:click="jianshao">-</button>
<span v-text="num">0</span>
<button v-on:click="zengjia">+</button>
</div>
<script>
// 如何操作文本、属性、事件
Vue.createApp({
data() {
return {
msg: "文本显示",
tit: "文本绑定",
num: "0"
}
},
methods: {
showdata() {
alert("操作事件")
},
zengjia() {
this.num++;
},
jianshao() {
this.num--;
}
}
}).mount("#app")
</script>
</body>
</html>
四、判断语句
<!DOCTYPE html>
<html lang="zh">
<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">
<script src="./js/v3.2.8/vue.global.prod.js"></script>
<title>Document</title>
</head>
<body>
<!-- -->
<div id="app">
<h1 v-bind:title="tit" v-text="msg" v-on:click="showdata"></h1>
<button v-on:click="jianshao">-</button>
<span v-text="num">0</span>
<button v-on:click="zengjia">+</button>
</div>
<script>
// 如何操作文本、属性、事件
Vue.createApp({
data() {
return {
msg: "文本显示",
tit: "文本绑定",
num: "0"
}
},
methods: {
showdata() {
alert("操作事件")
},
zengjia() {
this.num++;
},
jianshao() {
if (this.num > 0) {
this.num--;
}
}
}
}).mount("#app")
</script>
</body>
</html>
五、事件简写
v-on:click可以写成@click
