Follow the below code :
<script type="text/javascript" language="javascript">
function ChkOnlyHtmlTag(event) {
var keycode;
//alert("hi");
if ($.browser.mozilla) {
if (parseInt(event.charCode) == 0) {
keycode = parseInt(event.keyCode);
}
else if ((parseInt(event.charCode) != 37) && (parseInt(event.charCode) != 60) && (parseInt(event.charCode) != 62)) {
keycode = parseInt(event.charCode);
}
else {
keycode = 0;
}
}
else {
if ((parseInt(event.keyCode) != 37) && (parseInt(event.keyCode) != 60) && (parseInt(event.keyCode) != 62)) {
keycode = parseInt(event.keyCode);
}
else {
keycode = 0;
}
}
if (keycode != 0) {
return true;
}
else {
return false;
}
}
$(function () {
$('input[type=text]').keypress(function (event) {
return ChkOnlyHtmlTag(event);
});
});
</script>
Create a aspx page and paste the code in design page. After that place some
textboxes into the page. And now run the page. Now try to type some HTML tag
into the textboxes. But you cannot type any of the HTML tag into the textboxes.
And the above function will work for all textboxes in entire the page.
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