javascript - js正则匹配的问题

Question

用正则匹配,只允许有数字和逗号

var str = "2456789,2345678765432,,,,234567876543,,,45678976543,,,,3456765432";

数字中间的逗号只允许出现一次;多的替换成空;如何写.大神在哪...
希望得到的结果2456789,2345678765432,234567876543,45678976543,3456765432;

Answer 1

대체(/,+/g, ",")

Answer 2

으아악