How can I trim the leading and trailing comma in javascript?

Question

I have a string that is like below.

,liger, unicorn, snipe,

how can I trim the leading and trailing comma in javascript?

Answer 1

If you want to make sure you don't have any trailing commas or whitespace, you might want to use this regex.

var str = ' , , , foo, bar,    ';
str = str.replace(/(^[,\s]+)|([,\s]+$)/g, '');

returns

"foo, bar"