You are viewing the Resources for the older version of JourneyApps (V3). JourneyApps V4 is the new default for all new apps since July 1, 2016.

JavaScript Basics in JourneyApps

JavaScript is used to define the behavior and logic of apps built on JourneyApps.

The following functionality is supported from JavaScript in JourneyApps:

JavaScript for Each View

Each view has a corresponding JavaScript file, that is automatically executed when the view loads.

Variable Initialisation

The JavaScript init() function is called when a view is loaded for the first time. This is typically used for initialising variables or queries.

Any variable or parameter defined in a view can be referenced by view.variablename.

Example View XML:

... and the JavaScript:

Calling Links

There are two ways to call links in JourneyApps:

  • Directly from a button component by specifying link="" on the button. See the Links section for more information.
  • Calling the link from JavaScript using the return link.link_name syntax.

For example, if you have a link defined in your View XML as such:

It can be called from JavaScript as follows:

If the view we are linking to requires any parameters, we can simply pass those parameters to the JavaScript function, for example:

Calling Links with Branching Logic

Example View XML:

... and the View JavaScript:

To do branching, we can simply use instead an if statement in our JavaScript function:


When you're using the Test App in Browser feature on the Test page of the App Editor, you can display debugging messages on your web browser's console using the console.log function:

Performing Calculations

An example for how calculations may be performed:

View XML:

View JavaScript:

Note that the view is automatically refreshed with the new "bmi" and "description" values.

Further JavaScript Functionality in JourneyApps