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Showing posts from January, 2012

Restrict the Textbox to enter only Numbers Using Javascript

Normally we get this type of requirement to accept only numbers in a text box.Suppose we have a Credit Card Number entry where we want to validate the key-press is number or not.Here i have simplified the way to enter only numbers in the text-box. Here i have written some logic to enter only numbers in textbox using javascript. < script type = " text/javascript " > function isNumberKey ( evt ) { var charCode = ( evt . which ) ? evt . which : event . keyCode if ( charCode > 31 && ( charCode < 48 || charCode > 57 ) ) return false ; return true ; } < script > Now we can call this fu nction in the events like keypress,keydown and keyup to validate the value is number or not. Happy Coding :-)