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• 2.0.0
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• raw.js

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polyfills.CustomEvent.raw.js Maven / Gradle / Ivy

// CustomEvent
this.CustomEvent = function CustomEvent(type, eventInitDict) {
	if (!type) {
		throw Error('TypeError: Failed to construct "CustomEvent": An event name must be provided.');
	}

	var event;
	eventInitDict = eventInitDict || {bubbles: false, cancelable: false, detail: null};

	if ('createEvent' in document) {
		try {
			event = document.createEvent('CustomEvent');
			event.initCustomEvent(type, eventInitDict.bubbles, eventInitDict.cancelable, eventInitDict.detail);
		} catch (error) {
			// for browsers which don't support CustomEvent at all, we use a regular event instead
			event = document.createEvent('Event');
			event.initEvent(type, eventInitDict.bubbles, eventInitDict.cancelable);
			event.detail = eventInitDict.detail;
		}
	} else {

		// IE8
		event = new Event(type, eventInitDict);
		event.detail = eventInitDict && eventInitDict.detail || null;
	}
	return event;
};

CustomEvent.prototype = Event.prototype;