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Terms, Icons, and Labels

Many classes have shortcut names used when creating (instantiating) a class with a configuration object. The shortcut name is referred to as an alias (or xtype if the class extends Ext.Component). The alias/xtype is listed next to the class name of applicable classes for quick reference.

Access Levels

Framework classes or their members may be specified as private or protected. Else, the class / member is public. Public, protected, and private are access descriptors used to convey how and when the class or class member should be used.

Member Types

Member Syntax

Below is an example class member that we can disect to show the syntax of a class member (the lookupComponent method as viewed from the Ext.button.Button class in this case).

lookupComponent ( item ) : Ext.Component

Called when a raw config object is added to this container either during initialization of the items config, or when new items are added), or {@link #insert inserted.

This method converts the passed object into an instanced child component.

This may be overridden in subclasses when special processing needs to be applied to child creation.


item :  Object

The config object being added.


The component to be added.

Let's look at each part of the member row:

Member Flags

The API documentation uses a number of flags to further commnicate the class member's function and intent. The label may be represented by a text label, an abbreviation, or an icon.

Class Icons

- Indicates a framework class

- A singleton framework class. *See the singleton flag for more information

- A component-type framework class (any class within the Ext JS framework that extends Ext.Component)

- Indicates that the class, member, or guide is new in the currently viewed version

Member Icons

- Indicates a class member of type config

- Indicates a class member of type property

- Indicates a class member of type method

- Indicates a class member of type event

- Indicates a class member of type theme variable

- Indicates a class member of type theme mixin

- Indicates that the class, member, or guide is new in the currently viewed version

Class Member Quick-Nav Menu

Just below the class name on an API doc page is a row of buttons corresponding to the types of members owned by the current class. Each button shows a count of members by type (this count is updated as filters are applied). Clicking the button will navigate you to that member section. Hovering over the member-type button will reveal a popup menu of all members of that type for quick navigation.

Getter and Setter Methods

Getting and setter methods that correlate to a class config option will show up in the methods section as well as in the configs section of both the API doc and the member-type menus just beneath the config they work with. The getter and setter method documentation will be found in the config row for easy reference.

History Bar

Your page history is kept in localstorage and displayed (using the available real estate) just below the top title bar. By default, the only search results shown are the pages matching the product / version you're currently viewing. You can expand what is displayed by clicking on the button on the right-hand side of the history bar and choosing the "All" radio option. This will show all recent pages in the history bar for all products / versions.

Within the history config menu you will also see a listing of your recent page visits. The results are filtered by the "Current Product / Version" and "All" radio options. Clicking on the button will clear the history bar as well as the history kept in local storage.

If "All" is selected in the history config menu the checkbox option for "Show product details in the history bar" will be enabled. When checked, the product/version for each historic page will show alongside the page name in the history bar. Hovering the cursor over the page names in the history bar will also show the product/version as a tooltip.

Search and Filters

Both API docs and guides can be searched for using the search field at the top of the page.

On API doc pages there is also a filter input field that filters the member rows using the filter string. In addition to filtering by string you can filter the class members by access level, inheritance, and read only. This is done using the checkboxes at the top of the page.

The checkbox at the bottom of the API class navigation tree filters the class list to include or exclude private classes.

Clicking on an empty search field will show your last 10 searches for quick navigation.

API Doc Class Metadata

Each API doc page (with the exception of Javascript primitives pages) has a menu view of metadata relating to that class. This metadata view will have one or more of the following:

Expanding and Collapsing Examples and Class Members

Runnable examples (Fiddles) are expanded on a page by default. You can collapse and expand example code blocks individually using the arrow on the top-left of the code block. You can also toggle the collapse state of all examples using the toggle button on the top-right of the page. The toggle-all state will be remembered between page loads.

Class members are collapsed on a page by default. You can expand and collapse members using the arrow icon on the left of the member row or globally using the expand / collapse all toggle button top-right.

Desktop -vs- Mobile View

Viewing the docs on narrower screens or browsers will result in a view optimized for a smaller form factor. The primary differences between the desktop and "mobile" view are:

Viewing the Class Source

The class source can be viewed by clicking on the class name at the top of an API doc page. The source for class members can be viewed by clicking on the "view source" link on the right-hand side of the member row.

Sencha Test 2.2.1


Understanding Sencha Test URLs

This guide details the various different URLs used by Sencha Test.

Project and Scenario URLs

The URL of the app to be tested can be set in one of two places:

  1. Project ("Tests" node)
  2. Scenario

The difference between these URLs is described below.

Project Location URL

The Project Location URL is the default URL for all scenarios within a test project. If a Scenario doesn't have an explicit URL set, it will inherit the Project Location URL.

Project Settings - Project Location URL

Scenario Location URL

The Scenario Location URL allows you to override the Project Location URL. You can either define a whole URL, e.g., or append a route or query string parameters that get added to the Project Location URL, e.g. #user/1 or ?modern.

Scenario Settings - Scenario Location URL

Note: If you have opened an Ext JS workspace in Sencha Studio and added a scenario within the Ext JS app or its packages, a default URL will be automatically assigned to the scenario. Behind the scenes, this will utilize Sencha Cmd to generate a build and spawn a web server instance through sencha app watch.

Test Runner URLs (for In-Browser Scenarios)

On the test runner screen for In-Browser scenarios you will see two URL buttons, as highlighted in red on the following screenshot:

Test Runner - URL buttons

When hovered over, these two buttons will show two different URLs generated by Sencha Studio - the Parking Lot URL and the Test Subject URL. Clicking either of the buttons copies the respective URL to the clipboard. A description of these two URLs is below.

Parking Lot URL

In-Browser scenarios have a Parking Lot URL - a URL that any local or remote (on the same network) browser can access while it "waits" for tests to be commenced. This provides a mechanism to run tests within web browsers on other machines or devices on the local network, and for Sencha Studio to be made aware of that remote browser instance.

For example, on another machine/device, access the parking lot URL via your machine's IP address (e.g. You will then see the message "This browser window is available for work from Sencha Studio":

Edge browser accessing the Parking Lot URL

Over in Sencha Studio, your device's browser should show up in the list of available browsers in the test runner screen, and the browser waits for tests to be run:

Remote Edge browser showing up in the test runner screen

Checking/ticking the browser in the list will cause the Parking Lot page to redirect to the proxied version of your app (the Test Subject URL). You can then run tests. After tests are finished executing, the browser returns to the Parking Lot page and waits for the next test run to commence.

Test Subject URL

The Test Subject URL is the URL to directly access the Sencha Test proxied version of your app. The proxied version of your app has the injected Sencha Test runner files, Jasmine, along with your test suite files.

The Parking Lot page redirects to the Test Subject URL when tests begin execution.

Sencha Test 2.2.1