1.初始化,生成package.json的文件： npm init -y
2.安装一个vue: npm install vue -S
3.生成的node_modules里面创建的method.html
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<!--1.引入vue.js-->
<script src="./node_modules/vue/dist/vue.js" ></script>
</head>
<body>
<!--2.编写div页面元素-->
<div id="app">
<input type="text">+<input type="text">
<button>=</button>
<input type="text">
</div>
<!--3.创建vue实例-->
<script >
const vm = new Vue({
el:'#app',
data:{},
methods:{},
})
</script>
</body>
</html>
加法计算
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<!--1.引入vue.js-->
<script src="./node_modules/vue/dist/vue.js" ></script>
</head>
<body>
<!--2.编写div页面元素-->
<div id="app">
<input type="text" v-model="first">+<input type="text" v-model="second">
<button @click="add">=</button>
<input type="text" v-model="result">
</div>
<!--3.创建vue实例-->
<script >
const vm = new Vue({
el:'#app',
data:{
first:0,
second:0,
result:0,
},
methods:{
add(){
// parseInt()返回一个整数
this.result = parseInt(this.first)+parseInt(this.second)
}
},
})
</script>
</body>
</html>
