=================== Web Console UI Tour =================== The Web Console's interface is split into three horizontal sections, detailed in the sections below. .. image:: web_console.png :alt: Web console" alt="Screenshot of FF web console :class: center .. _web_console_ui_tour_toolbar: Toolbar ******* The toolbar across the top contains a number of features: - **Garbage can:** Click this icon to clear the contents of the console. - **Funnel (filter):** Enter text to filter the messages that are displayed in the console message pane. :ref:`Plain-text ` and :ref:`regular expression ` filtering are supported. - :ref:`Filter categories `: Toggle a filter category (such as Errors, Warnings, CSS, or XHR) to display messages of that type in the message page (the UI shows the number of hidden message for unselected categories). - **Settings ("gear" menu):** Select the gear icon to access the settings menu (New in Firefox 71), where you can toggle the following features on and off: - **Persist Logs**: When enabled, the console doesn't clear on page reload, or new page load. - **Show Timestamps**: When enabled, timestamps are shown on the left-hand side of each message row to say when the messages were logged. - **Group Similar Messages**: When enabled, similar types of messages are grouped together, with an indicator of the number of occurrences. - **Enable Autocompletion**: When enabled, the JavaScript interpreter attempts to autocomplete while you type. - **Instant Evaluation**: When enabled, the interpreter displays the evaluated results of an expression, when possible, before you press :kbd:`Enter` to submit it. Message display pane ******************** This is where the messages appear, both those generated by the code in the page, and those generated by the commands entered on the command line. See :doc:`Console messages <../the_command_line_interpreter/index>` for a lot more detail on what the messages can contain. .. note:: You can clear the contents of the console by entering the keyboard command :kbd:`Ctrl` + :kbd:`Shift` + :kbd:`L` (Windows, macOS, and Linux) or :kbd:`Cmd` + :kbd:`K` on macOS. Command line ************ The :doc:`command line <../the_command_line_interpreter/index>` starts with double angle brackets (>>). Use it to enter JavaScript expressions. In Firefox 71 onwards, there is a new "split pane" icon on the right hand side of the command line — clicking this will open the new console :ref:`multi-line mode `.