编辑
核心代码
<!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>删除数组最后一个元素</title> </head> <body> <script>function truncate(arr) { return arr.slice(0,-1); } </script> </body> </html>
总结
利用slice反向截取就可以显示
