javascript regex grab variable value

Question

I need to grab the value of a variale found in a javascript file. Using xmlhttprequest I can get the page's source, however, I need a regular expression to grab the value of a few variables located within the file.

I want to grab the value of a variable:

var VARIABLE_NAME = VALUE

I tried this regular expression:

/var VARIABLE_NAME \=/

But I think I am missing what needs to be done for getting what's after the equal sign.

Sudhir Bastakoti · Accepted Answer · 2012-01-06 07:54:06Z

4

Try:


regex = /VARIABLE_NAME=(.*)/;
alert(yourText.match(regex)[1]);

answered Jan 6, 2012 at 7:54

Sudhir Bastakoti

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1 Comment

Joshua Redfield Over a year ago

That worked, what's the best way to remove the semi-colon at the end?

Community · Accepted Answer · 2017-05-23 12:03:14Z

1

You don't need to add a \ before the = sign. You may add also some \s* in your Regexp if you're not sure of the number of spaces.

You can see here how to capture a group : How do you access the matched groups in a JavaScript regular expression?

edited May 23, 2017 at 12:03

CommunityBot

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answered Jan 6, 2012 at 7:46

Baldrick

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