提示框随鼠标移动

本文通过一个具体的示例展示了如何使用CSS进行布局设计,并结合JavaScript实现元素的动态提示效果。具体包括定义HTML结构、设置CSS样式以及利用JavaScript监听鼠标事件来显示提示信息。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>classList</title>
<style>
    *{
      margin: 0;
      padding: 0;
    }
    .wrap {
      width: 1000px;
      height: 400px;
      background-color: #ccc;
    }
    .wrap_ul {
      font-size: 14px;
      display: flex;
      flex-flow: row wrap;
      justify-content: space-between;
      height: 100%;
    }
    .wrap_ul li {
      width: 80px;
      height: 100px;
      margin: 30px;
      
      list-style: none;
    }
    .wrap_ul li img {
       width: 80px;
      height: 80px;
    }
    .wrap_ul li span {
      display: block;
       width: 80px;
      height: 20px;
      text-align: center;
    }
</style>
</head>
<body>
  	<div class="wrap">
  		<ul class="wrap_ul">
  			<li class="list">
  				<img src="1.png">
  				<span class="name">搭街坊</span>
  			</li>
  			<li class="list">
  				<img src="1.png">
  				<span  class="name">大幅度</span>
  			</li>
        <li class="list">
          <img src="1.png">
          <span  class="name">地方</span>
        </li>
        <li class="list">
          <img src="1.png">
          <span  class="name">速度快</span>
        </li>
        <li class="list">
          <img src="1.png">
          <span  class="name">对方答复v</span>
        </li>
        <li class="list">
          <img src="1.png">
          <span  class="name">范德萨</span>
        </li>
        <li class="list">
          <img src="1.png">
          <span  class="name">sfgv</span>
        </li>
        <li class="list" class="list" class="list">
          <img src="1.png">
          <span class="name">是否需</span>
        </li>
        <li class="list" class="list">
          <img src="1.png">
          <span  class="name">大锅饭</span>
        </li>
        <li class="list">
          <img src="1.png">
          <span class="name">地方</span>
        </li>
        <li class="list">
          <img src="1.png">
          <span class="name">搭街坊</span>
        </li>
        <li class="list">
          <img src="1.png">
          <span class="name">地方</span>
        </li>
        <li class="list">
          <img src="1.png">
          <span class="name">的付费的快</span>
        </li>
        <li class="list">
          <img src="1.png">
          <span class="name">速度快</span>
        </li>
  		</ul>
  	</div>
    <div class="desc">注意:tip一定要用fixed定位,如果用absolute的话,鼠标滚轮一滚,tip就移位了</div>

    <script type="text/javascript">
      var lists = document.getElementsByClassName('list');
      var tip = document.createElement('div');

      Array.apply(null,lists).forEach(function(current,index,arr){
        current.addEventListener('mousemove',function(e) {
          
          var name = this.querySelector('span');
          tip.style.cssText = 'position:fixed;left:0;top:0;background:rgba(0,0,0,0.5);color:white;padding:5px;border-radius:4px';
          tip.innerHTML =name.innerText;
          tip.style.left = e.clientX + 'px';
          tip.style.top = e.clientY + 'px';
          this.appendChild(tip);
        });

        current.addEventListener('mouseover',function() {
          tip.style.display = 'block';
        });
        current.addEventListener('mouseout',function() {
          tip.style.display = 'none';
        })

      })
   </script>

</body>
</html>





                
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