Question

怎么把一个字符串数组转换为一个逗号分隔的字符串

Answer 1

String str=a,c,dfd,gggtg,dw,e;
String[] str=str.split(",");

Answer 2

var arr = new Array(3) ;
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr.join()