vue实现简易计算器

来源：cnblogs　　作者：炸呼呼er　　时间：2019/9/29 8:59:06　　对本文有异议

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>简易计算器</title>
    <script src="./lib/vue.js"></script>
</head>
<body>
<div id="app">
    <input type="text" v-model="num1">
    <select v-model="opt">
        <option value="+">+</option>
        <option value="-">-</option>
        <option value="*">*</option>
        <option value="/">/</option>
    </select>
    <input type="text" v-model="num2">
    <input type="button" value="=" @click="cal">
    <input type="text" v-model="result">
</div>
<script>
    var vm = new Vue({
        el:"#app",
        data:{
            num1:0,
            num2:0,
            result:0,
            opt:"+"
        },
        methods:{
            cal(){
                switch (this.opt) {
                    case "+":
                        this.result = parseInt(this.num1) + parseInt(this.num2)
                        break;
                    case "-":
                        this.result = parseInt(this.num1) - parseInt(this.num2)
                        break;
                    case "*":
                        this.result = parseInt(this.num1) * parseInt(this.num2)
                        break;
                    case "/":
                        this.result = parseInt(this.num1) / parseInt(this.num2)
                        break;
                }
            }
        }
    })
</script>
</body>
</html>