The small Command Line supports auto-completion using the Tab key. For example, typing 'w' followed by Tab completes it into 'window'. Cycling through the possible completions is done with the arrow keys. Since Firebug 1.6 there's also an popup with suggestions shown for the entered part of a command, unless disabled in the Console options.
The Command Line also supports the Command Line API, a set of special purpose commands.
In Firebug 1.6 the Command Line was made available to all panels (called Command Line Popup) and can be accessed through the Command Line Popup Button ( ). To see the output of the commands you have to drag the resizer above the Command Line Popup.
To support the user analysing elements and writing code the small Command Line integrates an auto-completion for the commands you are typing. Therefore after starting to type a command you simply have to press
Tab and Firebug is completing the command. It is also possible to complete a value with
Enter or the
→ arrow key or by clicking an item inside the Completion List Popup. If there are several commands starting with the same phrase like "getElem" you can use the
↓ arrow keys before pressing
Tab to alphabetically switch through all available commands. Also the global variables, which you defined in your script, are used.
Furthermore the auto-completion is case-insensitive, which allows for rapid typing. E.g. entering "document.gete" offers "document.getElementById", "document.getElementsByClassName", "document.getElementsByName", "document.getElementsByTagName" and "document.getElementsByTagNameNS".
The entered script can be copied as bookmarklet via the menu of the Command Editor.
Shortcuts for inspected elements
The Command Line and the Command Editor offer you the possibility to easily access elements inside the DOM similar to the sizzle selector library integrated in the jQuery Framework.
There are different commands available providing a wide variaty of functionality. For a detailed description of the these commands see the Command Line API.
Inspect object in other panel
How you inspect elements using the console is described above. Besides that it's also possible to inspect them in the most appropriate panel by hitting
Shift+Enter instead of just
Enter. The console output also often contains links to other panels like the DOM Panel.
Smart code pasting
When you paste a multi-line script to the Command Line it automatically switches to the Command Editor, so that the line breaks are preserved and you can edit your script as you would do inside an editor.