Monday, March 19, 2012

Numeric key validation using JavaScript

we can check entered keyis numeric or not using javascript coding in our web page.

check example given below:-

Only Numeric key can be Entered :

html code for this:-

<script type = "text/javascript">
    function isNumeric(keyCode)
        if (keyCode!=8) //if the key is the backspace key
        if ((keyCode<48||keyCode>57) && (keyCode<96||keyCode>105))          return  false;    
            return true;   
Only Numeric key Entered In text Box :
<input type="text" id="txtBox1" onkeydown = "return isNumeric(event.keyCode);"/>

          ASCII code for integers 0-9 is 48-57.
          ASCII code for extra numeric key pad's integers 0-9 is 96-105.

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