Event: "attributeChange" Description: Sets a handler to exicute when the specified attributes change on a DOM element. Returns: domElement, or $A object if chained. Note: This event utilizes the Mutation Observer API. https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver Example: // Bind an attribute change handler to a specified DOM element. $A(targetElement).on("attributeChange", function(MutationObject, targetElement, attributeName, attributeValue, attributePriorValue, BoundObjectOrDC, SavedData) { // Do something with targetElement. // BoundObjectOrDC populates when the targetElement is bound using $A.bindObjects(), or is bound to a DC instance. // SavedData populates when saved event parameters are specified using the $A.on event syntax. (Help/$A API/DOM Events/On) }, { attributeFilter: ["Attribute1Name", "Attribute2Name", "Etc."] });