SyntaxError: invalid quantifier

mletynski's Avatar


09 Jan, 2013 09:17 AM

When your response data contain forbidden characters for Regexp like + or ? you will get an error: SyntaxError: invalid queantified.

Those lines:

if( != -1 && values_input.val().search(","+data[num][opts.selectedValuesProp]+",") == -1){

var regx = new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + query + ")(?![^<>]*>)(?![^&;]+;)", "gi");

var regx = new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + query + ")(?![^<>]*>)(?![^&;]+;)", "g");

are buggy. You need to escape query string with something like this:

query.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&")

Reply to this discussion

Internal reply

Formatting help / Preview (switch to plain text) No formatting (switch to Markdown)

Attaching KB article:


Attached Files

You can attach files up to 10MB

If you don't have an account yet, we need to confirm you're human and not a machine trying to post spam.

Keyboard shortcuts


? Show this help
ESC Blurs the current field

Comment Form

r Focus the comment reply box
^ + ↩ Submit the comment

You can use Command ⌘ instead of Control ^ on Mac