Numerals Only : TextField « Form Control « JavaScript DHTML





Numerals Only

  
<HTML>
<HEAD>
<TITLE>Numerals Only</TITLE>
<SCRIPT> 
function numeralsOnly(evt) {
    evt = (evt) ? evt : event;
    var charCode = (evt.charCode) ? evt.charCode : ((evt.keyCode) ? evt.keyCode : 
        ((evt.which) ? evt.which : 0));
    if (charCode > 31 && (charCode < 48 || charCode > 57)) {
        alert("Enter numerals only in this field.");
        return false;
    }
    return true;
}
</script>
</head>
<body>
<form>
<input type="text" ... onkeypress="return numeralsOnly(event)">
</form>
</body>
</html>
           
         
    
  










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