replace string with javascript using regex

Question

up vote 1 down vote favorite

Hi I have text inside "textarea" and I was trying to remove the text between: <textarea></textarea> using replace function with some regex. here is what I did so far:

x = '<TEXTAREA style="DISPLAY: none" id=test name=test>teeeeessst!@#$%&*(LKJHGFDMNBVCX</TEXTAREA>';

x.replace('/<TEXTAREA style="DISPLAY: none" id=test name=test>.*</TEXTAREA>/s','<TEXTAREA style="DISPLAY: none" id=test name=test></TEXTAREA>');

thanks for your help :)

edited Jul 22 at 12:43

KennyTM
73.6k784189

asked Jul 22 at 12:41

ermac2014
545

50% accept rate

	Is that `<textarea>` actually in the page? – KennyTM Jul 22 at 12:43
	And what did you get ? – M42 Jul 22 at 12:47
	problem solved :) check Eric's answer – ermac2014 Jul 22 at 13:08
	then check this answer as solution. – Hippo Jul 22 at 13:53

Eric Wendelin · Answer 1 · 2010-07-22 12:55:18Z

up vote 1 down vote accepted

You'll probably want something like this:

x.replace(/(<textarea[^>]*>)[^<]+(<\/textarea>)/img, '$1$2');

This will replace things case-insensitively within multi-line strings and avoiding greedy matches of things like ".*"

answered Jul 22 at 12:55

Eric Wendelin
4,184825

	thanks man this one works like charm.. really appreciated :) – ermac2014 Jul 22 at 13:05
	You're welcome :) – Eric Wendelin Jul 22 at 14:43
	The `m` modifier only matters if there are anchors (`^` or `$`) in the regex. – Alan Moore Aug 8 at 7:19

Pointy · Answer 2 · 2010-07-22 12:48:58Z

up vote 1 down vote

First problem is that you've got your regex inside quotes. It should just be /regex/ without quotes. Then you're going to have to put a backslash before the forward slash in the regex.

/<TEXTAREA style="DISPLAY: none" id=test name=test>.*<\/TEXTAREA>/

There's no regex flag "s", so I don't know what you thought it means but just drop it.

answered Jul 22 at 12:48

Pointy
25.6k51435

	I really don't know how to use regex with javascript. it seems like different from PHP. – ermac2014 Jul 22 at 12:52
	Yes, it's different. Not a lot different, but different. – Pointy Jul 22 at 13:20
	You mean there's no `s` flag in JavaScript regexes. To get the same effect we usually use replace the `.` with `[\s\S]`, but in this case `[^<]` is more appropriate, as @Eric showed. – Alan Moore Aug 8 at 7:40

unigg · Answer 3 · 2010-08-08 05:13:38Z

Similar to Eric's method, or use more general regexp.

var re =/(\<[^<]+\>)[^<]+(<\/[^<]+>)/;

x = x.replace(re, '$1$2');

You can use this tool to have a test. The result should be output to testarea.

replace string with javascript using regex

3 Answers

Your Answer

Not the answer you're looking for? Browse other questions tagged javascript regex string replace preg-replace or ask your own question.

Hello World!

replace string with javascript using regex

3 Answers

Your Answer

Not the answer you're looking for? Browse other questions tagged javascript regex string replace preg-replace or ask your own question.

Hello World!

Related