I'm not sure why people are using more than a single regular expression for this. The OP is asking for a regex that begins with word characters, ends with word characters, and internally may have one or more sequences of word-comma-word.

This expression should do it: 

  /(\w+(?:\,\w+)*)/

[download]

Update: the OP adds above "if I wanted to check for more than 2 consecutive commas", which requires a minor change: 

  /(\w+(?:\,{1,2}\w+)*)/

[download]

In reply to Re: Regular Expression Question by simonm
in thread Regular Expression Question by TASdvlper

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