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RABiD BUNNY FEVER
K.T.K

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Debugging AJAX in Chrome

It has always really bugged me that in Chrome, when you want to view the response and form data for an AJAX request listed in the console, you have to go through multiple annoying clicks to view these two pieces of data, which are also on separate tabs. There is a great Chrome extension though called AJAX-Debugger that gets you all the info you need on the console. However, it also suffered from the having-to-click-through problem for the request data (5th object deep in an object nest), and it did not support JSONP. I’ve gone ahead and fixed these 2 problems :-).


Now to get around to making the other Chrome plugin I’ve been needing for a while ... (Automatic devtool window focus when focusing its parent window)


[Edit on 2015-08-20 @ 8:10am] I added another patch to the Chrome extension to atomically run the group calls (otherwise, they sometimes showed out of order).

Also, the auto focusing thing is not possible as a pure extension due to chrome API inadequacies. While it would be simple to implement using an interval poll via something like Auto Hot Key, I really hate [the hack of] making things constantly poll to watch for something. I’m thinking of a hybrid chrome extension+AHK script as a solution.

Cross Domain AJAX Requests
Bypassing the pesky browser security model

Since I just released my AJAX Library, I thought I’d post a useful script that uses it. The function CrossDomainGetURL below uses the AJAX Library to make requests across domains in Firefox. It takes one more parameter (not in order) than the AJAX Library's GetURL function, which is an array of domains to pull cookies from for the AJAX request.


function GetCookiesFromURL(Domains) //Return all the cookies for Domains specified in the Domains array
{
	var cookieManager = Components.classes["@mozilla.org/cookiemanager;1"].getService(Components.interfaces.nsICookieManager); //Requires privileges, which is granted in CrossDomainGetURL
	var iter=cookieManager.enumerator, CookieList=[], cookie; //The object used to find all cookies, the final list of cookies, and a temporary object
	while(iter.hasMoreElements()) //Loop through all cookies
		if(((cookie=iter.getNext()) instanceof Components.interfaces.nsICookie) && Domains.indexOf(cookie.host)!=-1) //If a cookie whose host matches one of our domains
			CookieList.push(cookie.name+'='+cookie.value); //Add it to our final list
	return CookieList.join("; "); //Return the cookie list for the specified domains
}

function CrossDomainGetURL(URL, Data, CookieDomains, ExtraOptions) //See AJAX Library GetURL function. CookieDomains is an array specifying what domains cookies are pulled from for the AJAX call. 
{
	//Access universal privileges in Firefox (Required to get cookies for other domains, and to use AJAX with other domains). This functionality is lost as soon as this function loses scope.
	try { netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); }
	catch(e) { return alert('Cannot access browser privileges'); }

	if(CookieDomains instanceof Array) //If an array of domains is passed to get cookies from...
	{	
		ExtraOptions=((ExtraOptions instanceof Object) ? ExtraOptions : {}); //Make sure extra options is an object
		ExtraOptions.AdditionalHeaders=((ExtraOptions.AdditionalHeaders instanceof Object) ? ExtraOptions.AdditionalHeaders : {}); //Make sure extra options has an additional headers object
		ExtraOptions.AdditionalHeaders.Cookie=GetCookiesFromURL(CookieDomains); //Get cookies for the domains
	}
	
	return GetURL(URL, Data, ExtraOptions); //Do the AJAX Call
}