Development Emergency: Text box allow only Alphabets

Thursday, 4 September 2014

Text box allow only Alphabets

Introduction:

Here I will show how to use Javascript to allow only alphabets in textbox or how to make textbox to allow only alphabets using javascript

<html>
<div>
               <script type="text/javascript">
                   function IsAlpha(e) {
                      // alert(e.keyCode);
                       var keyCode = e.keyCode == 0 ? e.charCode : e.keyCode;

//65 to 90 is Capital letter : 97 to 122 is small letter : 32 is Space  : Delete 127
                       var ret = ( (keyCode >= 65 && keyCode <= 90) || (keyCode >= 97 && keyCode <=

           122) || (keyCode == 32) || (keyCode == 08) || (keyCode == 127));
                      // document.getElementById("error").style.display = ret ? "none" : "inline";
                       return ret;
                   }
        </script>
            <input type="text" id="text1" onkeypress="return IsAlpha(event);" ondrop="return false;"
        onpaste="return false;" />

   
        </div>
</html>