Question

I am not very good with regular expression.

I have a string like:

var bigString = 'abc,xyz,def';

I want to create a regular expression that it looks for either preceding commas or comma at the end.

e.g:

Valid expressions will be :
abc,
,xyz,
,def

I will appreciate any kind of help.

Answer 1

Well that regex would be:

/(?:,[A-Za-z]+)|(?:[A-Za-z],)/