validation for comma separated values in javascript

hi

I have one text box , it can have values like 1 or 1,2 or 1,225,345,21 ie multiple values so ……But now i want textbox should validate
weather values entered by user are proper

toString().match(/^{^(([0-9](,)?)*)+$/)}

This is code i’m using its validating correct only ,but one problem
when user enter values like this and comma in last its not validating
inputval:1,22,34,25,645,

the last comma is not validating
it should through an error

can any one help me plz

Also in #JavaScript _↴