property 'onpaste' of null böyle bir hata veriyor.
<script>
document.querySelector('input').onpaste = function(e) {
alert('Are you sure the email you\'ve entered is correct?');
}
</script>
<script>
document.querySelector('input').onpaste = function(e) {
alert('Are you sure the email you\'ve entered is correct?');
}
</script>