<script src = "$ {ctx} /cat/js/love.js"> </ script>
Commonly used regular expressions:
Delete java comment / * * /: / \ * {1,2} [\ s \ S] *? \ * /
Delete java comment ///// [\ s \ S] *? \ N
Delete the xml comment: <!-[\ S \ S] *?->
Delete blank lines: ^ \ s * \ n