lovecoding
/
VIP24


			
				
					
						
						
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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>
</head>
<body>
  <ul>
    <li>1</li>
    <li>2</li>
    <li>3</li>
  </ul>
  <script>
    /* ... 扩展运算符  把数组或者类数组 展开成用逗号分隔的值 */
    // var a = [1,2,3]
    // var b = [...a]
    // console.log(...a)
    // b[0] = 8
    // console.log(b)
    // console.log(a)

    /* 合并 */
    var a = [1,2,3]
    var b = [4,5,6]
    var c = [...a,...b]
    console.log(c)
    var d =[...c,7,8]
    console.log(d)

    var aLi = document.getElementsByTagName('li')
    console.log(aLi)
    /* 把类数组转化成数组 */
    var arr1 = [...aLi]
    console.log(arr1)

    arr1.push(11)
    console.log(arr1)
  </script>
</body>
</html>