ParaBellum577

let testStr = "vasya@guerrillamail.com"
if (blacklist.some(part => testStr.includes(part))) {
  // отмена
}

<div id="modal_id" role="dialog" aria-hidden="true" data-backdrop="static" data-keyboard="false">Модальное окно, закрывающееся по esc</div>
<script>
	document.addEventListener('keypress', function (e) {
		if(e.keyCode === 27) document.getElementById('modal_id').hidden= 1;
	}); 
</script>

componentWillUnmount() {
  window.removeEventListener('scroll', this.isFastUpVisible);
  clearTimeout(this.timeout);
}