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

AlphaNumeric characters validation in TextBox using JavaScript and Regex

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