效果预览图
完整代码
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>作业</title><style>body{background: #ecdada;}*{margin: 0;padding: 0;}#app{width: 1000px;height: 100%;margin: 10px auto;}h2{text-align: center;margin-top: 10px;}.wp{width: 960px;height: 250px;background: pink;overflow: hidden;border-radius: 10px;padding: 20px;}textarea{display: block;margin: 5px auto;border-radius: 10px;padding: 10px;resize: none;}.wp button{display: block;width: 60px;height: 40px;background: #99ead6;margin-left: auto;border: none;border-radius: 5px;cursor: pointer;}input{width: 200px;height: 30px;margin-left: 5px;padding-left: 10px;border-radius: 5px;}.pl{width: 1000px;height: 180px;background: #fff;overflow: hidden;border-radius: 10px;margin-top: 20px;}span{width: 980px;height: 40px;display: block;white-space: nowrap;overflow: hidden;text-overflow: ellipsis;margin-left: 10px;}p{margin: 0 0 10px 10px;}h3{margin: 10px;}button{display: inline-block;width: 60px;height: 40px;background: #99ead6;border: none;border-radius: 5px;margin-top: 10px;margin-left: 20px;cursor: pointer;}</style>
</head>
<body><div id="app"><h2>留言板</h2><div class="wp"><input type="text" placeholder="给自己定义一个身份吧(默认匿名)" v-model="val"><textarea class="area" rows="10" cols="130" placeholder="有什么新鲜事想告诉大家" v-model="val2"></textarea><button v-if="fl==1" @click="add">发布</button><button v-else-if="fl==2" @click="add2(jk)">提交修改</button></div><div class="pl" v-for="(item,index) in arr"><h3>{{arr[index].name}}</h3><p>{{arr[index].times}}</p><span>{{arr[index].cont}}</span><button @click="sc(index)">删除</button><button @click="xg(index)">修改</button></div></div>
</body>
</html>
<script type="module">import { createApp } from './js/vue.esm-browser.js';createApp({data() {return {arr:[{name:'小姚学前端',times:'时间',cont:'学习111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111，好好学习，天天向上'},],val:'',val2:'',fl:1,jk:-1,}},methods:{add(){let nn = new Date().toLocaleString()if (this.val2=='') {alert('内容不能为空')}else if (this.val2!='') {let obj={name:this.val==''? '来自匿名':this.val,times:nn,cont:this.val2}this.arr.unshift(obj)this.val2=''this.val=''this.fl=1}},add2(jk){let nn = new Date().toLocaleString()if (this.val2=='') {alert('内容不能为空')}else if (this.val2!='') {let obj={name:this.val==''? '来自匿名':this.val,times:nn+'修改',cont:this.val2}this.arr[jk]=objthis.val2=''this.val=''this.fl=1}},sc(index){let userResponse = window.confirm("确定要删除留言吗");if (userResponse) {this.arr.splice(index,1)} else {}},xg(index){this.val2=this.arr[index].cont;this.val=this.arr[index].namethis.fl=2this.jk=index}}}).mount('#app')
</script>
