Each column has a description of what it means if you set your mouse to hover over it in Firebug. I’ll assume you can read up on how each column works on your own then. However, you have definitely come across some odd behavior which needs to be explained. The own time is the amount … Read more
Another possible cause of this is when you are working with a .html file directly on the file system. For example, if you’re accessing it using this url in your browser: C:/Users/Someguy/Desktop/MyProject/index.html If that then has to make an ajax request, the ajax request will fail because ajax requests to the filesystem are restricted. To … Read more
The jQuery source is pretty easy to read, and you can look at what the data function is doing. To summarize: jQuery has a variable called ‘expando’ which is ‘jQuery’+(+new Date) jQuery has another variable called uuid which starts with “1” jQuery.cache is an empty object Setting/Getting any “data” on a HTML Element/Object will use … Read more
This Partial Content code (206) may be sent from the server when the client has asked for a range (e.g. “give me the first 2MB of video data”). It is vital for downloading data in chunks which avoids fetching unused resources. (I seldom watch a full video online.) Look at the outgoing request for a … Read more
I just worked on this similar question. The solution involves adding the word debugger twice; once at the top of the external file and one more time at the top of the function that needs to be debugged. I noticed that if the debugger word was used only once, it did not work. Example: //myExternal.js … Read more
As I wrote in the Firebug discussion group, that the <body> element is selected first before the actual element you inspected is a bug and I’ve already filed a bug report for it. There is also a bug related to the Inspect Element with Firebug option, which opens the DevTools, but doesn’t actually select the … Read more
There is a solution to use Firebug version 2.0.18 in the latest version of Firefox (this time 51.0.1). To enable the old Firebug: In the address bar, enter about:config and find browser.tabs.remote.autostart. Set it to false. Also set browser.tabs.remote.autostart.1 and browser.tabs.remote.autostart.2 to false.
If you’re sure it’s being set on the inline style and not as a consequence of a stylesheet rule, you can detect changes using the non-standard Mozilla watch() method: document.body.style.watch(‘color’, function(name, v0, v1) { alert(name+’: ‘+v0+’->’+v1); }); document.body.style.color=”red”; You can put debugger; in the watcher function and look up the call stack in Firebug to … Read more
You don’t have to jump through all these hoops. Simply check if the console exists before using it. So, instead of: console.log(‘foo’); Use: window.console && console.log(‘foo’); …and you won’t get any errors. Alternatively, you could just check for it at the top of your script, and if it’s undefined, just fill it with an empty … Read more
Try Chrome’s developer tools, click ‘Network’ tab use the filters at the bottom to show only WebSocket connections), select the desired websocket connection, note that there are ‘Headers’, ‘Preview’, ‘Response’, etc. sub-tabs to the right, once data starts flowing a ‘WebSocket Frames’ subtab will appear. All data going in either direction is logged. Very informative.