Defining global variable in QML

Article Metadata

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Tested with

Devices(s): Nokia E7, Nokia N8, Nokia N900

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Compatibility

Platform(s): Symbian
Maemo

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Article

Keywords: JavaScript

Created: tepaa (14 Jan 2011)

Last edited: hamishwillee (11 Oct 2012)

Overview

This snippet shows how to define global variable in QML using JavaScript. User cannot define global variables in QML code.

This snippet was used in the Nokia Developer example QuickHit

Preconditions

None.

JavaScript -file

For example Game.js file contains levelPlugin global JavaScript variant variable.

// Global variable in JavaScript file
var levelPlugin = null

Using global variable in QML

Example of QML file. Global variable can be used after importing JavaScript.

// Import JavaScript Game.js file as GameScript alias
import "Game.js" as GameScript
 
// Using global variable in QML function
if (GameScript.levelPlugin) {
    console.log("levelPlugin exists")
} else {
    console.log("levelPlugin is NULL")
}

Postconditions

Global variable can be used in QML.