QML Global Object▲
The QML JavaScript host environment implements the following host objects and functions. They are built-in, so you can use them from any JavaScript code loaded in QML, without additional imports:
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The Qt object: A QML object that offers helper methods and properties specific to the QML environment.
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qsTr(), qsTranslate(), qsTrId(), qsTrNoOp(), qsTranslateNoOp(), qsTrIdNoOp() functions: QML functions that let you translate strings and string literals in the QML environment.
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gc() function: A QML function that manually triggers garbage collection.
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print() function: A QML function that prints output to the console.
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The console object: Implements a subset of the FireBug Console API.
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XMLHttpRequest, DOMException: Implements a subset of the W3C XMLHttpRequest specification.
You cannot use the globalObject() function to change the global object of a QQmlEngine. For more information, see JavaScript Environment Restrictions.