User Guide > Reference > JavaScript Debug Perspective > Expressions View

Expressions View [Debug Perspective]

The Expressions view will not open by default when a debugging session is launched, but only when you have selected to watch a variable.

To watch a variable, right-click a variable in the editor or from the Variables View and select Watch. The Expressions view will open and the variable will be added to it. The variable's information will be updated as the debugging process continues.

Note:

To manually open the Expressions view, go to Window | Show View | Debug | Expressions.

The Expressions view allows you to monitor certain variables which you have decided to 'watch' during the debugging process. Selecting a variable will display details in the detail pane beside the view. Expanding the list under a variable will display its fields.

Expressions View

Expressions View Toolbar Commands

Icon	Name	Description
	Show Type Names	Displays type names
	Show Logical Structure	Displays the logical structure.
	Collapse All	Collapses the list.
	Create a New Watch Expression	Allows you to define a new watch expression to add to the list.
	Remove Selected Expression	Removes the expression selected in the view.
	Remove All Expressions	Removes all expressions in the view.

Expressions View Menu Commands

The view's menu can be accessed through the view menu icon .

Name

Description

Layout

Defines the view's layout:

Vertical View Orientation - The details pane will be displayed at the bottom of the Variables view.
Horizontal View Orientation - The details pane will be displayed to the right of the Variables view.
Expressions View Only - Only the Watched Variables pane will be displayed.

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