1、引入vue.js
<head>
<meta charset="UTF-8">
<title>Vue简易计算器</title>
<script src="../lib/vue.js"></script>
</head>
2、编写基本HTML结构
<div id="app">
<input type="text" v-model="n1">
<select name="" id="" v-model="opt">
<option value="+">+</option>
<option value="-">-</option>
<option value="*">*</option>
<option value="/">/</option>
</select>
<input type="text" v-model="n2">
<input type="button" value="=" v-on:click="calc">
<input type="text" v-model="result">
</div>
3、vue绑定对象
<script>
var app = new Vue({
el: '#app',
data: {
n1: '',
n2: '',
result: '',
opt: '+'
},
methods: {
calc() {
//判断操作符
switch (this.opt) {
case "+":
this.result = parseInt(this.n1) + parseInt(this.n2);
break;
case "-":
this.result = parseInt(this.n1) - parseInt(this.n2);
break;
case "*":
this.result = parseInt(this.n1) * parseInt(this.n2);
break;
case "/":
this.result = parseInt(this.n1) / parseInt(this.n2);
break;
}
}
}
})
</script>
4、效果显示
