AlphaNumeric characters validation in TextBox using JavaScript and Regex

Question

I want to allow only alphabets and numbers and no special characters in my textboxI want to do this using Regular Expressions and JavaScript Please post an example

Mudassar · Accepted Answer

Try this lthtml xmlns34httpwwww3org1999xhtml34gtltheadgt    lttitlegtlttitlegt    ltscript type34textjavascript34gt        function Validatetxt             txtvalue  txtvaluereplaceazAZ 09nrg 3939            ltscriptgtltheadgtltbodygt    ltform id34form134gt        ltinput type  34text34 id  34txt34 onkeyup  34Validatethis34 gt    ltformgtltbodygtlthtmlgtDemo

vinayak · Answer

Thanks but I need to allow DOT character

AlphaNumeric characters validation in TextBox using JavaScript and Regex

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