lovecoding
/
VIP22


			
				
					
						
						
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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>Document</title>
  <style>
    #div1{
      width: 200px;
      height: 200px;
      background: #000;
      left: 100px;
      top: 400px;
      position: absolute;
    }
  </style>
  <script>
    /* 等页面所有的东西都加载完毕  再去执行里面的内容 */
    /* window.onload = function(){
      var div1 = document.getElementById('div1')
      console.log(div1)
    } */
    
  </script>
</head>
<body>
  <button id="btn">点击我 我就动</button>
  <div id="div1"></div>
  <script>
    var div1 = document.getElementById('div1')
    var btn = document.getElementById('btn')
    btn.onclick = function(){
      div1.style.background = 'yellow'
      div1.style.left = '400px'
      div1.style.top = '100px'
    }
  </script>
</body>
</html>