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matching characters regExp positive lookahead

Does JavaScript support positive lookahead?
I want to match every charater except html tags.
I found that [COLOR=”Red”]/(?<=^|>)[^><]+?(?=<|$)/g [/COLOR]do the job in [url]http://gskinner.com/RegExr/[/url] but i got sytax error on my javaScript editor.

What is the alternative solution to match all characters but html-tags?

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JavaScript

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@massalexxauthorSep 15.2009 — The expression is a mix of lookabehind and lookahead ([COLOR="Red"]?<=[/COLOR] is positiv lookabehind and [COLOR="Red"]?=[/COLOR] is positive lookahead) and the answer is no. JavaScript does not support positiv/negative lookabehind.

I experience a very slow navigation throught this site. What can be the problem?

A very slow server? or i need to disable/enable something in my browser?

Thx
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