machinecat520
/
zj-Exercise


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<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">
    <title>姓名案例_计算属性简写</title>
    <!-- 引入vue -->
    <script type="text/javascript" src="../js/vue.js"></script>

</head>
<body>
    <!-- 准备好一个容器 -->
    <div id="root">
        姓：<input type="text" v-model="firstName"></input><br><br>
        名：<input type="text" v-model="lastName"></input><br><br>
        全名：<span>{{fullName}}</span>
    </div>
    
</body>
<script type="text/javascript">
    Vue.config.productionTip = false //阻止 vue 在启动时生成生产提示

    const vm = new Vue({
        el:'#root',
        data:{
            firstName:'张',
            lastName:'三'
        },
        computed:{
            //完整写法
            // fullName:{
            //     get(){
            //         console.log('get被调用')
            //         return this.firstName + '-' + this.lastName
            //     },
            //     set(value){
            //         console.log('set',value)
            //         const arr = value.split('-')
            //         this.firstName = arr[0]
            //         this.lastName = arr[1]
            //     }
            // }

            // 简写
            fullName(){
                console.log('get被调用')
                return this.firstName + '-' + this.lastName
            }
        }
    })

</script>
</html>