Hash_Tag Client side Validation

Hi anybody help me to find suitable validation way for Hash_Tag, My need is user should only type hash_tag like below format. a) #sports b) #sports,#news

Please Help Me, Regards, Manoj.

Manoj M. wrote in post #1113802:

Hi anybody help me to find suitable validation way for Hash_Tag, My need is user should only type hash_tag like below format. a) #sports b) #sports,#news

There's not enough information here to really know how to help you, but the solution will almost certainly involve regular expressions...

So would the following format be invalid in your app?

"Some random text #sports and some more random text #news #football."

You have not specified enough detail for what you consider valid hashtags to formulate a workable regular expression.

Hi anybody help me to find suitable validation way for Hash_Tag, My need is user should only type hash_tag like below format. a) #sports b) #sports,#news

Did you really mean "Client Side Validation" as you have in your Even if you do use Client Side validation, you really need to do Server Side as well to guard against hacks. Read about Server Side here:

Follow Robert's advice as well and learn some regular expression magic. You'll need it for either side.

I'm wondering altogether though, why the need to validate this? If the user is typing a stream of text, they may or may not wish to include # at some point other than as a hash tag; I think perhaps you maybe just want to extract the hash tags that match your spec, rather than declare the input invalid? I'm just speculating here, I obviously don't know what your application is trying to do. It's the concept of hash tags from twitter and now other services that I'm thinking of; a way to denote a specific key word to search on in a stream of text.

Anyway, more code/design/info is needed to help more, I think.