firebug | 易学教程

Using the IE8 'Developer Tools' to debug earlier IE versions

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I am less than satisfied in my HTML/CSS/JS debugging of pages with IE6 and 7 specific bugs. I am aware that IE8 has a Firebug clone, called 'Developer Tools' installed. Is it possible to have IE8 installed (maybe on a VM, i don't mind), set it to compatibility mode (is there one for IE6?), then perform JS debugging and live HTML changes, using the IE8 Developer Tools , just like we can in Firebug? many many thanks mieze There are differences between native IE6/7 and the IE8 compatibility mode: http://blogs.msdn.com/ie/archive/2009/03/12/site-compatibility-and-ie8.aspx The best option I've

Chrome's firebug's technic to track ajax requests

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I'm trying to make my google chrome extension to track ajax requests while browsing web. Only way i found is to listen for DOMSubtreeModified event. Event is fired on every single ajax event but there is no additional information about the request. But in Firebug google chrome extension there is ajax requests tracking with many details. I tried to check how they do it in the source code but it's hard for me to understand. Do You know how to track those events to get some details about request? Maybe someone could take a look at this firebug's technic or maybe someone knows it and could tell me

How to detect if browser console / inspector is open?

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What's the best way to determine if the user has the browser console (i.e. firebug, webkit inspector, Opera dragonfly) open ? (I.e. I'm not interested in merely detecting the presence of the console object in script. I want to know when the user has actually opened the debugger panel. Ideally across the major browsers (IE/Safari/Chrome/Firefox... and even mobile browsers if possible) remdevtec If you are willing to accept an interference for the user, you could use the debugger statement , as it is available in all major browsers. Side note: If the users of your app are interested in console

What does Firebug “XML cannot be the whole program” error message mean?

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I just got this error message in Firebug. A google search reveals nothing but other mystified people! Does anyone have any idea what it means? It's being indicated on the last line of this 3-line script: <script> g_BuildServer = "/"; </script> tomdemuyt If you put JavaScript in a js file (which I assume you did), do NOT put the script tags, put g_BuildServer = "/"; only. Otherwise, to the parser, you just provided an XML document as a script. I got this error when using jquery $get with no data type attribute when it was retrieving html. I added the dataType parameter as "html" and it fixed

Find script that changed the value attribute of a <input /> tag

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问题 <form id="search" action="/search" method="get" autocomplete="off"> <div> <input type = "button" name = 'test_button" value = "test" /> </div> </form> <script> document.getElementById("test_button").value = "changed_test" </script> Just as the HTML code above shows, I have defined a button with name test_button and value test and changing it's value with the code in the script tag. Now I am debugging a large webpage which is using a mechanism like this using Firebug and Firefox in Linux. I

Firefox - Disable 'debugger' keywords

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问题 How do I tell Firefox not to stop if it sees a debugger keyword? I need to avoid a continuous debugger loop in case the website uses debugging protection generating debugger statements on the fly using timers. Here is an example. In case you open the debugging console the script will throw tons of debugger statements, which will block you from normal debugging work. An example website is http://www.avito.ru - the biggest classified site in Russia. Open it and then open the debugger console

Is there a way to stop Firebug from working on a particular site?

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问题 Is there some way to make Firebug not work at all on a website? 回答1: If the performance of your website suffers when Firebug is enabled, you may want to display a warning, asking users to switch it off. You can easily detect if Firebug is enabled through JavaScript. 回答2: WARNING: EXTREME EVIL. NEVER EVER USE THIS CODE. Also, it won't deter someone who is resourceful. setTimeout(checkForFirebug, 100); function checkForFirebug() { if (window.console && window.console.firebug) { while(true); /

How to debug JavaScript / jQuery event bindings with Firebug or similar tools?

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I need to debug a web application that uses jQuery to do some fairly complex and messy DOM manipulation. At one point, some of the events that were bound to particular elements, are not fired and simply stop working. If I had a capability to edit the application source, I would drill down and add a bunch of Firebug console.log() statements and comment/uncomment pieces of code to try to pinpoint the problem. But let's assume I cannot edit the application code and need to work entirely in Firefox using Firebug or similar tools. Firebug is very good at letting me navigate and manipulate the DOM.

Firebug console: not showing console.log

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I am trying to test something, and for one reason or another, while working in the Firebug console, I am unable to create an array of script tags on the HTML page using the getElementByTagName('script') method. I realize there is probably something stupid I am overlooking. This is the dummy HTML page: <html> <head> <title>Random Crapolla Page</title> <h1>Random Crapolla Page</h1> </head> <body> <div id="whyNot"> <p id="p1"> <a href="http://google.com">Here is link one</a><br /> <a href="http://google.com">Oh poop here's another</a><br /> <a href="http://google.com">And a 3rd for good measure<

What can cause a persistent “Reload the page to get source for” error in firebug?

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I'm trying to debug the javascript of a specific page, and I keep seeing Reload the page to get source for page.htm in Firebug. On Chrome, I'm mostly able to debug the js, but sometimes I also get a blank page. What can cause such issues? I believe I always see a blank page in Chrome if I reload while the JS console is open. If I open a new Chrome tab, load the page, and then open the JS console, everything is ok. The page I'm debugging is on a localhost server (Play Framework server), although I have seen this on other pages occasionally. This only happens with inline javascript ... js that