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===========
Rich output
===========
When the Web console prints objects, it includes a richer set of information than just the object's name. In particular, it:
- :ref:`provides extra information for certain types <web_console_rich_output_type_specific>`
- :ref:`enables detailed examination of the object's properties <web_console_rich_output_examining_object_properties>`
- :ref:`provides richer information for DOM elements, and enables you to select them in the Inspector <web_console_rich_output_highlighting_and_inspecting_dom_nodes>`
.. _web_console_rich_output_type_specific:
Type-specific rich output
*************************
The Web Console provides rich output for many object types, including the following:
.. list-table::
:widths: 20 80
:header-rows: 0
* - ``Object``
- .. image:: web-console-object.png
* - ``Date``
- .. image:: web-console-date.png
* - ``Promise``
- .. image:: web-console-promise.png
* - ``RegExp``
- .. image:: web-console-regexp.png
* - ``Window``
- .. image:: web-console-window.png
* - ``Document``
- .. image:: web-console-document.png
* - ``Element``
- .. image:: web-console-element.png
* - ``Event``
- .. image:: webconsole-events.png
.. _web_console_rich_output_examining_object_properties:
Examining object properties
***************************
When an object is logged to the console it has a right-pointing triangle next to it, indicating that it can be expanded. Click on the triangle, and the object will be expanded to show its contents:
.. image:: console_logobject.png
:class: border
Starting with Firefox 67 (available now in Firefox Developer) you can use the arrow keys on your keyboard to navigate through objects displayed in the console. The right-arrow key opens the details of an object and the left-arrow key closes open objects.
.. _web_console_rich_output_examining_request_details:
Examining request details
*************************
Similar to examining object details, you can see the details about a network request directly in the console. Click on the arrow next to the request and a details panel will open that is equivalent to the Headers panel in the Network Monitor tool.
.. raw:: html
<iframe width="560" height="315" src="https://www.youtube.com/embed/Cj3Pjq6jk9s" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<br/>
<br/>
Export output to the clipboard
******************************
Once you have output in the console window, you can save it to the clipboard by right-clicking on the output and selecting **Export visible messages to clipboard**:
.. image:: console_export.png
:class: center
This will copy all of the output to the clipboard. Then you can paste it into a document. The output will look something like this:
.. code-block::
console.log(todoList)
Array(4) [ {…}, {…}, {…}, {…} ]
debugger eval code:1:9
undefined
If you expand objects, such as arrays, you get slightly different content. For example, by expanding the array in the above list, I get the following:
.. code-block::
console.log(todoList)
(4) […]
0: Object { status: "Done", description: "Morning Pages", dateCreated: 1552404478137 }
1: Object { status: "In Progress", description: "Refactor styles", dateCreated: 1552404493169 }
2: Object { status: "To Do", description: "Create feedback form", dateCreated: 1552404512630 }
3: Object { status: "To Do", description: "Normalize table", dateCreated: 1552404533790 }
length: 4
<prototype>: Array []
debugger eval code:1:9
undefined
.. _web_console_rich_output_highlighting_and_inspecting_dom_nodes:
Highlighting and inspecting DOM nodes
*************************************
If you hover the mouse over any DOM element in the console output, it's highlighted on the page:
.. image:: commandline-highlightnode.png
:class: center
In the screenshot above you'll also see a blue "target" icon next to the node in the console output: click it to switch to the :doc:`Inspector <../../page_inspector/index>` with that node selected.