only allow numeric input in textbox javascript code example
Example 1: type numeric value only in textbox javascript
<input type="text" class="textfield" value="" id="extra7" name="extra7" onkeypress="return isNumber(event)" />
Example 2: type numeric value only in textbox javascript
function isNumber(evt) {
evt = (evt) ? evt : window.event;
var charCode = (evt.which) ? evt.which : evt.keyCode;
if (charCode > 31 && (charCode < 48 || charCode > 57)) {
return false;
}
return true;
}