Like the Web Console, the command line interpreter enables you to evaluate JavaScript expressions in real time: Also like the Web Console's command line interpreter, this command line supports autocomplete, history, and various keyboard shortcuts and helper commands. To enable it set the preference to true in about:config, or set the "Enable chrome debugging" option in the developer tool settings. The Browser Console command line is disabled by default. The following image shows the browser console focused on the same page as above after clicking on the Show Content Messages checkbox. the messages from scripts in all the opened pages) by setting or clearing the checkbox labeled Show Content Messages. at the bottom, a command line interpreter enables you to evaluate JavaScript expressions.īeginning with Firefox 68, the Browser Console allows you to show or hide messages from the content process (i.e.at the top, a toolbar enables you to filter the messages that appear.most of the window is occupied by a pane that display messages.You can see that the Browser Console looks and behaves very much like the Web Console: You can also start the Browser Console by launching Firefox from the command line and passing the -jsconsole argument: /Applications/FirefoxAurora.app/Contents/MacOS/firefox-bin -jsconsole from the keyboard: press Ctrl+ Shift+ J (or Cmd+ Shift+ J on a Mac).from the menu: select "Browser Console" from the Web Developer submenu in the Firefox Menu (or Tools menu if you display the menu bar or are on macOS).You can open the Browser Console in one of two ways:
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