Javascript Number Validation - Javascript
How to do number validation using javascript?
Snippet Code
Rate this page :
|
[ 1 votes]
|
The following javascript code can be used to allow only numbers inside the text box. Here, check() function is used for number validation.
<script type="text/javascript">
function check(txtval){
var num = txtval.value;
if(isNaN(num))
{
num = num.substring(0,(num.length-1));
txtval.value = num;
}
}
</script>
Enter Number: <input type="text" onkeyup="check(this)" />
