CODEWITHSUNDEEP
javascripturlfirefox-addon
Bruno
Bruno

Reputation: 9077

Add event to Firefox when a specific url is loaded

I'd like to write an extension that adds a div element to a page when a specific URL is loaded (e.g. when the url is http://www....&q=car&aq I'd like to have a div element containing "car" added to the webpage)

I'm already using addEventListener to check if a tab is open but I don't know how to do it for a specific URL.

p.s I'm not asking you guys to do my homework, only some links to tutorials speaking of this kind of tricks or basic examples d.s

Upvotes: 0

Views: 253

Answers (2)

Wladimir Palant
Wladimir Palant

Reputation: 57691

It would probably be easier for you to create a user script for GreaseMonkey. There is tons of documentation (e.g. in the GreaseMonkey wiki) and also lots of existing user scripts to look at on userscripts.org. A script can be "compiled" into a regular extension (see User Script Compiler).

If you want to stick with a real extension then you probably want to register a progress listener. This way you will know when the location of a tab changes:

onLocationChange: function(aBrowser, webProgress, request, location)
{
    if (location.host == "example.com")
        doSomething(aBrowser.contentDocument);
}

Upvotes: 1

Neeraj
Neeraj

Reputation: 8542

You can get the url using the command window.location so you can do something like

if (window.location.indexof("http://www.yoururl.com") != -1 && !$.browser.msie)
{
    //add a div to the dom here.

}

This line !$.browser.msie is actually jquery, and might not compile incase you are not including jquery libraries, it basically checks for the browser version is not IE.

You can remove this part -- && !$.browser.msie -- if you are not using jquery.

Upvotes: 1

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