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Ligthning - Passing data up and around the component hierarchy via an application component
<aura:event type="APPLICATION">
<aura:attribute name="param" type="String"/>
</aura:event>
<aura:component>
<aura:handler event="c:applicationEvent" action="{!c.handleMyApplicationEvent}"/>
</aura:component>
({
handleMyApplicationEvent : function(component, event, helper) {
var value = event.getParam("param");
alert("Received application event with param = "+ value);
}
})
<aura:component>
<aura:registerEvent name="myApplicationEvent" type="c:applicationEvent"/>
<lightning:button label="Fire application event" onclick="{! c.fireMyApplicationEvent }" />
</aura:component>
({
fireMyApplicationEvent : function(component, event, helper) {
var myEvent = $A.get("e.c:applicationEvent");
myEvent.setParams({"param": "It works!"});
myEvent.fire();
}
})
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