vscode微博发布案例-易微帮

样例:

CSS代码:

* {
  margin: 0;
  padding: 0;
}

ul{
  list-style: none;
}

.w {
  width: 900px;
  margin: 0 auto;
}

.controls textarea {
  width: 878px;
  height: 100px;
  resize: none;
  border-radius: 10px;
  outline: none;
  padding-left: 20px;
  padding-top: 10px;
  font-size: 18px;
}

.controls {
  overflow: hidden;
}

.controls div {
  float: right;
}

.controls div span {
  color: #666;
}

.controls div .useCount {
  color: red;
}

.controls div button {
  width: 100px;
  outline: none;
  border: none;
  background: rgb(0, 132, 255);
  height: 30px;
  cursor: pointer;
  color: #fff;
  font: bold 14px '宋体';
  transition: all 0.5s;
}

.controls div button:hover {
  background: rgb(0, 225, 255);
}

.controls div button:disabled {
  background: rgba(0, 225, 255, 0.5);
}

.contentList {
  margin-top: 50px;
}

.contentList ul {
  height: 800px;
}

.contentList li {
  /* display: none; */
  padding: 20px 0;
  border-bottom: 1px dashed #ccc;
  height: 60px;
}

.contentList li a {
  margin-left: 800px;
}

HTML代码:

<!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>Document</title>
  <link rel="stylesheet" href="./css/weibo.css">
  <script src="../发布微博案例/jquery-3.7.1.min.js"></script>
</head>
 
<body>
  <div class="w">
    <div class="controls">
      <img src="images/tip.png" alt=""><br>
      <textarea placeholder="说点什么吧..." id="area" cols="30" rows="10" maxlength="200"></textarea>
      <div>
        <span class="useCount">0</span>
        <span>/</span>
        <span>200</span>
        <button id="send">发布</button>
      </div>
    </div>
    <div class="contentList">
      <ul id="list">
      </ul>
    </div>
  </div>
  <script src="./index.js"></script>
</body>
 
</html>

js代码:

const user=[{usname:'未命名',imgSrc:'images/03.jpg'}]
let textarea=document.querySelector('textarea')
let useCount=document.querySelector('.useCount')
let btn=document.querySelector('#send')
let ul=document.querySelector('#list')
//检测输入字数:
textarea.addEventListener('input',function(){
    useCount.innerHTML=this.value.length
})
btn.addEventListener('click',function(){
    //输入不能为空
    if(textarea.value.trim()==='')
    {   
        return alert('内容不能为空')
    }
    function getrandom(min,max){
        return Math.floor(Math.random()*(max-min+1))+min
    }
    let a=getrandom(0,user.length-1)
    //  新增留言 应写在点击事件内部
    // 创建一个小li 然后里面通过innerHTML追加数据
    let li=document.createElement('li')
    li.innerHTML=`<div class="info">
    <img src=${user[a].imgSrc}>
    <span class="username">${user[a].usname}</span>
    <button class="del">删除</button>
    <div class="content">${textarea.value}</div>
    <div class="send-time">${new Date().toLocaleString()}</div>`
    //删除
    let del = li.querySelector('.del');
    del.addEventListener('click', function () {
    ul.removeChild(li);
    });
    //
    ul.insertBefore(li, ul.children[0]);
    textarea.value = '';
    useCount.innerHTML = 0;

})
//再按下回车同时发送
textarea.addEventListener('keyup',function(a){
    if(a.key === 'Enter'){
        btn.click()
    }
})

vscode微博发布案例

样例:

CSS代码:

HTML代码:

js代码:

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