Firefox Stop On Javascript Error
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How To Debug Javascript In Firefox
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How To Debug Javascript In Chrome
favorite 3 I am developing with Firefox and Firebug, but in my environment if the js has the syntax error, the firefox will not report any error, it just stops there. Then I have to use IE to reload the page, IE will report the error at the bottom left corner, and after clicking it I can see the line number of the js error. I am wondering if firefox debug console I misconfigured something? I think at least firebug should report the error as IE does. But firebug displayed nothing. The example code(show error in IE but normal in FF):
script if (a < ) 0 { } javascript debugging firefox firebug share|improve this question edited Jan 17 '11 at 4:31 asked Jan 17 '11 at 4:15 Bin Chen 12.5k33107162 add a comment| 2 Answers 2 active oldest votes up vote 9 down vote accepted To configure Firebug to show errors, do the following: Click the arrow on the Console tab. Make sure it's Enabled. Make sure "Show JavaScript Errors" is checked. You should see the errors in the console now, and it should show you the line number and filename. I am using Firefox 3.6 and Firebug 1.5.0. UPDATE: This same process also works in the latest Firefox Nightly 19.0a1, using Firebug 1.10.4. Thus, these instructions are still up to date. share|improve this answer edited Oct 24 '12 at 19:17 answered Jan 17 '11 at 4:30 jmort253 23.6k76592 add a comment| Did you find this question interesting? Try our newsletter Sign up for our newsletter and get our top new& Guides Learn the Web Tutorials References Developer Guides Accessibility Game development ...more docs Mozilla Docs Add-ons Firefox WebExtensions Developer ToolsFeedback Get Firefox help Get web development help firefox debugger breakpoint not working Join the MDN community Report a content problem Report a bug Search Search how to fix javascript error in mozilla firefox Languages 中文 (简体) (zh-CN) Add a translation Edit Advanced Advanced History Print this article MDN Mozilla Debugging Debugging JavaScript Your a script on this page may be busy Search Results jwhitlock AdamskiFTW leplatrem teoli vladikoff mizandaniel wbamberg Pandark fitzgen DCamp maybe jukbot mnoorenberghe Luke314 cold sun PikadudeNo1 Sheppy harth Kastor Dmose evilpie Aryx int3 madarche zhangpin04 siple007 Neil Johnjbarton BenB Ncmathsadist http://stackoverflow.com/questions/4709982/how-to-make-firefox-report-the-javascript-error Kohei kohei.yoshino Debugging JavaScript In This Article Web ConsoleBrowser ConsoleError ConsoleBrowser Debugger (Built-in)Strict code checkingConsole.log in Browser Consoledump()Log.jsm (formerly log4moz)"debugger" keywordScratchpadSee AlsoOriginal Document Information This document is intended to help developers writing JavaScript code in Mozilla, mainly for Mozilla itself, but it may also be useful for web developers. It should give pointers to tools, aids and tricks which make debugging your code easier. Web Console https://developer.mozilla.org/en-US/docs/Mozilla/Debugging/Debugging_JavaScript This is the first place to go when you're debugging a web page; open the Web console using the Web Console option in the Web Developer menu. This shows any JavaScript errors in your app, as well as any logging calls from the console API. Browser Console The Browser Console lets you see all JavaScript errors and logging in the browser, including from Firefox code. To enable it, go to about:config in the url bar and set devtools.chrome.enabled to true, or set the "Enable chrome and add-on debugging" option in the developer tool settings. Activate it through with the menu Tools > Web Developer > Browser Console. You can also start the Browser Console when you launch Firefox, by launching Firefox from the command line and passing --jsconsole as a flag: /path/to/firefox --jsconsole Log to the Browser Console using the standard console API after importing Console.jsm: let console = (Cu.import("resource://gre/modules/Console.jsm", {})).console; console.log("Hello from Firefox code"); Error Console This is obsolete and is no longer enabled in Firefox by default. Use the Web Console or the Browser Console instead. Browser Debugger (Built-in) On Firefox 19 or later, it's possible to use the built-in JS debugger on the browser itself.
script Firefox Editing Tools Article Discussion Edit Article Translate Article Show Translations What Links Here Show History Customize this article Firefox Version 51 Version 50 Version 49 Version 48 Version 47 Version 46 Version 45 https://support.mozilla.org/en-US/kb/warning-unresponsive-script Windows 8 Windows 7/Vista Windows XP Mac Linux Windows 10 Explore more topics Basic browsing Install https://developer.mozilla.org/en-US/docs/Tools/Debugger and update Sync and save Chat and share Do more with apps Protect your privacy Manage preferences and add-ons Fix slowness, crashing, error messages and other problems Was this article helpful? Warning Unresponsive script - What it means and how to fix it Firefox may give you a "Warning: Unresponsive script" prompt that says "A script on this page may be script error busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete." This article describes why this could happen and possible solutions and workarounds. This error is telling you that Firefox thinks that a script may be running out of control and would make Firefox hang if nothing is done. The script could be something on a web page you're accessing, in an extension you installed, how to debug or even Firefox itself. Table of Contents1 Webroot Spy Sweeper2 Letting the script run longer3 Error happens when accessing certain websites4 Other causes Webroot Spy Sweeper Webroot Spy Sweeper can cause this problem. Disabling Spy Sweeper's Tracking Cookies feature (or disabling Spy Sweeper altogether) can solve the issue. Letting the script run longer If you find that pressing the Continue button brings up the same dialog again, letting the script run longer won't help you; it will just make Firefox hang for longer. However, if you can use Firefox normally after pressing Continue, then the script may just needs extra time to complete. To tell Firefox to let the script run longer: In the address bar, type about:config and press EnterReturn. The about:config "This might void your warranty!" warning page may appear. Click I'll be careful, I promise!I accept the risk! to continue to the about:config page. In the about:config page, search for the preference dom.max_script_run_time, and double-click on it. In the Enter integer value prompt, type 20. Press OK. With scripts now allowed to run for longer times, you may no longer receive the prompt. If you still receive the prompt (or if you want to see it again), you should set that preference back to the default value. In the address bar, type about:config and press EnterReturn. The about:config "This might void your warranty!" warning page may appe
& Guides Learn the Web Tutorials References Developer Guides Accessibility Game development ...more docs Mozilla Docs Add-ons Firefox WebExtensions Developer ToolsFeedback Get Firefox help Get web development help Join the MDN community Report a content problem Report a bug Search Search Firefox Developer Tools Languages عربي (ar) বাংলা (বাংলাদেশ) (bn-BD) Čeština (cs) Deutsch (de) Español (es) Français (fr) Bahasa Indonesia (id) Italiano (it) 日本語 (ja) 한국어 (ko) മലയാളം (ml) Nederlands (nl) Polski (pl) Português (do Brasil) (pt-BR) Português (Europeu) (pt-PT) Română (ro) Русский (ru) 中文 (简体) (zh-CN) 正體中文 (繁體) (zh-TW) Add a translation Edit Advanced Advanced History Print this article MDN Firefox Developer Tools Debugger Your Search Results wbamberg goosutoo DevAsh Eskat2424 xfq jmdyck EmilyG Newser Dymos TotalAMD fscholz kittkatt marian1991 radkodinev past tehsis jryans vimal_2812 fitzgen Luke314 gsvelto Sheppy dangoor Debugger The JavaScript Debugger enables you to step through JavaScript code and examine or modify its state to help track down bugs. You can use it to debug code running locally in Firefox or running remotely, for example in a Firefox OS device or Firefox on Android. See remote debugging to learn how to connect the debugger to a remote target. User Interface Tour To find your way around the debugger, here's a quick tour of the UI. How to To find out what you can do with the debugger, see the following how-to guides: Open the debugger Set a breakpoint Disable breakpoints Step through code Break on a DOM event Highlight and inspect DOM nodes Pretty-print a minified file Search and filter Set a conditional breakpoint Examine, modify, and watch variables Use a source map Black box a source Debug eval sources Access debugging in add-ons Reference K