Javascript: if (previous page == certainurl) { function }

Question

I want to execute a function only if the previous page the user visited is on a certain domain. How can this be done using javascript (or jQuery or whatever)?

possible duplicate of [How do you get the previous url in Javascript?](http://stackoverflow.com/questions/3528324/how-do-you-get-the-previous-url-in-javascript) — John Flatness, Aug 21 '11 at 20:46

score 2 · Answer 1 · answered Aug 21 '11 at 20:47

2

How about referencing document.referrer?

answered Aug 21 '11 at 20:47

Brad Christie

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score 1 · Answer 2 · answered Aug 21 '11 at 20:47

1

You can use document.referrer for this. However, don't count on it always being correct, as some proxies, e.g., don't supply it. It will probably give you some good hits, though.

answered Aug 21 '11 at 20:47

Erik A. Brandstadmoen

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score 1 · Answer 3 · answered Aug 21 '11 at 20:48

You can use javascript's referrer object to see where the user came from.

if (document.referrer && document.referrer.indexOf("http://" + somehost) > 0){
   // do something
}

Be cautions because this not really reliable. You should use some kind of persistent data to know what the user did.

Javascript: if (previous page == certainurl) { function }

3 Answers3