how to check enter only 10 number in mobile number textbox
<label>
MOBILE NO</label>
<input type="number" name="mob" onkeypress="return IsNumeric(event);">
<span id="error" style="color: Red; display: none">* Input digits (0 - 9)</span>
<script type="text/javascript">
var specialKeys = new Array();
specialKeys.push(8); //Backspace
function IsNumeric(e) {
var keyCode = e.which ? e.which : e.keyCode
var ret = ((keyCode >= 48 && keyCode <= 57) || specialKeys.indexOf(keyCode) != -1);
document.getElementById("error").style.display = ret ? "none" : "inline";
return ret;
}
</script>