Hello friends, In this post you are going to learn about aura method as well as you will find a code example to implement aura method inside your lightning component, so let's get started.

Aura method in lightning component

Aura method (aura:method) work as a component's API. This helps you to directly call a method present in a component's client-side controller without using component event. Using aura:method we can call child component method directly from parent component. Let's understand it with simple code example.

Implementation:

For aura:method implementation we have to create two components. i.e.  a) ChildComponent b) Parent Component.

ChildComponent.cmp

 <aura:component implements="force:appHostable,flexipage:availableForAllPageTypes" access="global">    
    <aura:method name="SampleMethod" action="{!c.executeMethod}" access="public">
        <aura:attribute name="param1" type="String" default="Aura Method"/> 
        <aura:attribute name="param2" type="String" default="Example"/> 
    </aura:method>
 </aura:component>
ChildComponentController.js
 ({
    executeMethod : function(component, event, helper) {		 
        var params = event.getParam('arguments');
        if (params) {
            var param1 = params.param1;
            var param2 = params.param2;
            alert("Output : "+param1 + " " + param2);
        }
    }
 })
ParentComponent.cmp
 <aura:component implements="force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome" access="global" >    
    <div class="slds-m-around_xx-large">        
        <c:ChildComponent aura:id="childCmp"/>        
        <lightning:button variant="brand" label="Execute Aura Method" onclick="{!c.executeAuraMethod}" />
    </div>
 </aura:component>
ParentComponentController.js
 ({
    executeAuraMethod : function(component, event, helper) {
        var childComponent = component.find("childCmp");
        var message = childComponent.SampleMethod("hi!","I am alert box through Aura Method");
    }
 })

Output:

 

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Thank you.