<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <script type="text/javascript"> let arr = [1, 2, 3, 4, 5]; //arr.splice(2,1);//从下标2开始删除当前元素 delete arr[4];// // 注意点: 通过delete来删除数组中的元素, 数组的length属性不会发生变化 console.log(arr); </script> </body> </html>
splice delete详解
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