lovecoding
/
web0331


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <div id="main">{{flower}}</div>
        <button @click="changeDate">修改数据</button>
    </div>
    <script src="./vue.js"> </script>
    <script>
        var vm = new Vue({
            el: "#app",
            data:{
                flower:"丁香花"
            },
            methods:{
                changeDate() {
                    // 视图改变 数据未变
                    // 修改渲染后数据未更新
                   
                    Vue.nextTick(()=>{ 
                        this.flower = '莲花';
                        console.log(document.getElementById("main").innerHTML,'1');
                    })
                    console.log(document.getElementById("main").innerHTML,'2');
                }
            }
        })
    </script>
</body>

</html>