CODEWITHSUNDEEP
javascriptc#htmlasp.netforms
user3950597
user3950597

Reputation:

Why does my regex work in .NET but not in Javascript?

I am using an asp RegularExpressionValidator to validate if a textarea has html or encoded html. I need the validator to work client side because I have ValidateRequest set to true on the page. My regex is set to match any string that does not have a less than character followed by an alpha character or an ampersand followed by some number of alpha characters ending in a semi-colon.

^((?![<]{1}[a-z]{1}).)*$
^((?![&]{1}[a-z]+;).)*$

Upvotes: 1

Views: 123

Answers (1)

Jason Williams
Jason Williams

Reputation: 2860

Javascript does not have a concept of Single-Line which lets your period match any character including line breaks. You should use the following in place of your comma: [\s\S]

^((?![<]{1}[a-z]{1})[\s\S])*$
^((?![&]{1}[a-z]+;)[\s\S])*$

Upvotes: 2

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