How do I block special characters from input box in HTML
| Asked on 2024-10-31 | • HTML, CSS
With the simple use of a regular expression, you can block special characters from the input box in HTML.
<script type="text/javascript">
$('input#username_go').on('keypress', function (event) {
var regex = new RegExp("^[a-zA-Z0-9]+$");
var key = String.fromCharCode(!event.charCode ? event.which : event.charCode);
if (!regex.test(key)) {
event.preventDefault();
return false;
}
});
</script>
$('input#username_go').on('keypress', function (event) {
var regex = new RegExp("^[a-zA-Z0-9]+$");
var key = String.fromCharCode(!event.charCode ? event.which : event.charCode);
if (!regex.test(key)) {
event.preventDefault();
return false;
}
});
</script>