Vue2.4-08.简易计算器

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>08.简易计算器</title>
    <!-- 1. 导入Vue -->
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
    <div id="app">
        <input type="text" v-model="n1">

        <select 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="=" @click="calc">
        
        <input type="text" v-model="result">

    </div>

    <script>
        var vm = new Vue({
            el:'#app',
            data:{
                n1:0,
                n2:0,
                result:0,
                opt:'+'

            },
            methods:{
                calc(){
                    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>
    
</body>
</html>

posted on 2019-12-01 22:05  梁南北  阅读(71)  评论(0)    收藏  举报

导航