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Firebug (software)

From Wikipedia, the free encyclopedia

Firebug
Original author(s)Joe Hewitt
Developer(s)Firebug Working Group
Stable release
2.0.19[1] / February 16, 2017; 7 years ago (2017-02-16)
Repository
Written inJavaScript, XUL, CSS
Operating systemCross-platform
TypeMozilla extension[2]
LicenseNew BSD License[3]
Websitegetfirebug.com

Firebug is a discontinued free and open-source[4] web browser extension for Mozilla Firefox[2] that facilitated the live debugging, editing, and monitoring of any website's CSS, HTML, DOM, XHR, and JavaScript.[5]

YouTube Encyclopedic

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  • Screencast #15: Introduction to Firebug
  • How to use Firebug while learning Javascript

Transcription

History

Firebug was licensed under the BSD license[3] and was initially written in January 2006 by Joe Hewitt, one of the original Firefox creators.[6] The Firebug Working Group oversaw the open source development and extension of Firebug. It had two major implementations: an extension for Mozilla Firefox and a bookmarklet implementation called Firebug Lite[7] which can be used with Google Chrome.[8]

In addition to debugging web pages, Firebug was used for web security testing[9] and web page performance analysis.[10]

Firebug has been deprecated in favor of the integrated developer tools added to Firefox itself, whose functionality has been unified with those of Firebug. As Firefox 57 no longer supports XUL add-ons, Firebug is no longer compatible.[11]

Version history

Version 2.0

Firebug 2.0 introduced many new features to the Firebug extension including JavaScript syntax highlighting, pretty print for minified JavaScript code, and a DOM Event Inspector to handle all event handlers on a web page. Additionally, users can search for page elements using CSS selectors in the search bar. The debugging tool now allows users to inspect JavaScript expressions as they are evaluated. Moreover, users can inspect values returned from JavaScript functions. It also adds the ability to create new HTML attributes for existing HTML elements.[12]

Version 3.0

On November 10, 2014, Firebug 3.0 was announced and an alpha was made available to the public.[13] This version was to feature a new theme and would have focused on user experience.

Features

Firebug makes changes immediately and gives constant feedback to the user. All editors in Firebug support autocomplete.[12]

The Firebug command line accepts commands written in JavaScript. The result of executing each command is displayed in the console, appearing as hyperlinks. The Firebug application contains multiple windows, splitting related features to a common window.[14] Firebug also allows users to view the download time for individual files. It separates different types of objects, such as JavaScript files and images, and can determined which files are loaded from a browser's cache. Firebug also features the ability to examine HTTP headers and time stamps relative to when an HTTP request is made.[15] Its net panel can monitor URLs that the browser requests, such as external CSS, JavaScript, and image files.

HTML and CSS

The HTML and CSS tools allow for the inspection and editing of HTML and CSS elements on a web page.[16] Later versions of Firebug allow users to see live changes to the CSS.[12] Visualization of CSS elements is shown while inspecting HTML elements. The Firebug layout tab is used to display and manipulate CSS property values. Furthermore, users can click on any visible HTML elements on a web page to access its CSS property values.[17]

JavaScript Console

Firebug's script tab enables users to set breakpoints and step through lines of code.[18] Additionally, Firebug can navigate directly to a line of JavaScript code, watch expressions, call stacks, and launch the debugger in the event an error occurs during execution. Firebug can also log errors. Logging uses a Firebug JavaScript API. Firebug's JavaScript panel can log errors, profile function calls, and enable the developer to run arbitrary JavaScript. Firebug allows users to run JavaScript code through the command line and allows the user to log errors that occur in the JavaScript, CSS, and XML. Firebug provides a separate text editor to modify the JavaScript and see immediate results on the user's browser.

As provided in an update, the JavaScript command line features an autocomplete function. The text editor also provides the ability to write full functions. Firebug requires a user to refresh a web page in the event of a crash.

Extensions

Many extensions have been made to enhance Firebug. Since Firebug is open source, users can contribute their own extensions to the Firebug community.[19]

See also

References

  1. ^ "Firebug Version History". Mozilla extension. 2017-02-16. Archived from the original on 2017-07-02. Retrieved 2015-08-19.
  2. ^ a b "Mozilla Firefox Add-on". Archived from the original on 2017-04-24. Retrieved 2011-09-27.
  3. ^ a b "Overview of Firebug". Archived from the original on 2014-12-06. Retrieved 2014-11-13.
  4. ^ Firebug on GitHub
  5. ^ "Firebug Home Page". Archived from the original on 2014-12-22. Retrieved 2014-11-13.
  6. ^ O'Reilly Performance Tools: Appendix - Even Faster Websites
  7. ^ "Firebug Lite Homepage". Archived from the original on 2014-12-17. Retrieved 2010-11-24.
  8. ^ Firebug Lite for Chrome
  9. ^ Hope, Paco; Walther, Ben (2008), Web Security Testing Cookbook, Sebastopol, CA: O'Reilly Media, Inc., ISBN 978-0-596-51483-9
  10. ^ "High Performance Web Sites", Steve Souders, CACM, Dec, 2008.
  11. ^ "Saying Goodbye to Firebug". Mozilla Hacks. Retrieved 2017-10-24.
  12. ^ a b c Odvarko, Jan. "Firebug 2.0 Release". Firebug Working Group. Retrieved 15 October 2015.
  13. ^ Odvarko, Jan. "Firebug 3.0 The Next Generation". Firebug Working Group. Retrieved 10 November 2014.
  14. ^ Hewitt, J. (2007). Ajax debugging with firebug. Dr.Dobb's Journal, 32(2), 22-26.
  15. ^ "What is Firebug?". Archived from the original on 2014-12-22. Retrieved 2014-11-13.
  16. ^ Salkosuo, Sami (2008-05-06). "Debug and tune applications on the fly with Firebug". IBM Developer Works. Retrieved 6 May 2008.
  17. ^ Zukerman, Erez (2012-01-06). "Debug Web Pages in Firefox With Firebug". PC World. Retrieved 6 January 2012.
  18. ^ Suehring, Steve. "Identify JavaScript Problems with Firebug". Dummies.
  19. ^ "List of Known Firebug Extensions". Archived from the original on 2014-11-13. Retrieved 2014-11-13.

Further reading

External links

This page was last edited on 22 December 2023, at 22:50
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