<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> </head> <body> <script> var arr = new Array();//new 一个数组 var str = ""; //定义一个字符串 str="2016-06-15,2016-06-16" var regex = /,/;//定义正则 arr=str.split(regex);//拆分 //重新组成 for(var i=0; i < arr.length; i++){ console.log(arr)//["2016-06-15", "2016-06-16"] document.write(arr[i] + "<br>"); console.log(arr[i]) //2016-06-15 2016-06-16 } </script> </body> </html>