With its open source debugger.html tool, launched this week, Mozilla is providing a JavaScript debugger that can debug multiple targets and work in a standalone mode. The effort is part of a plan ...

Mozilla has launched Firefox 77 with faster JavaScript debugging, optional permissions for extensions, and Pocket recommendations in the U.K.

Mozilla began migrating Firebug features to the built-in Firefox debugging tools in 2016. Core Firefox developer tools include a page inspector, web console, JavaScript debugger, and network monitor.

There’s also a new JavaScript Debugger that developers can use over a local network to remotely debug apps running on Firefox for Android, for example.

Mozilla’s JavaScript team is on a mission to renovate the JavaScript engine for the upcoming major release of Firefox. When version 3.5 landed with major JS performance upgrades including the ...

The Developer Command Line is integrated into Firefox's new Developer Toolbar, which also gives users quick access to Firefox's integrated Web console, JavaScript debugger, and page element ...