Full version: jsB@nk » Form » Validation » Validate Numeric Only
URL: https://www.javascriptbank.com/validate-numeric-only.html
This JavaScript verifies that a string is numeric, otherwise it deletes the non-numeric character.
Full version: jsB@nk » Form » Validation » Validate Numeric Only
URL: https://www.javascriptbank.com/validate-numeric-only.html
<script language="javascript">// Created by: Manzi Olivier :: http://www.imanzi.com/// calculate the ASCII code of the given characterfunction CalcKeyCode(aChar) { var character = aChar.substring(0,1); var code = aChar.charCodeAt(0); return code;}function checkNumber(val) { var strPass = val.value; var strLength = strPass.length; var lchar = val.value.charAt((strLength) - 1); var cCode = CalcKeyCode(lchar); /* Check if the keyed in character is a number do you want alphabetic UPPERCASE only ? or lower case only just check their respective codes and replace the 48 and 57 */ if (cCode < 48 || cCode > 57 ) { var myNumber = val.value.substring(0, (strLength) - 1); val.value = myNumber; } return false;}</script><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com--><form name="myForm" method="post" action="#"> Enter an integer here: <input name="txtNumber" type="text" id="txtNumber" onKeyUp="javascript:checkNumber(myForm.txtNumber);"></form><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com-->