Creating Dependent Picklists in Lightning Components

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Hope you are doing great 😀

Today we are going to Create Dependent Picklists in Lightning Components.

The below tutorial video shows detailed steps to create Create Dependent Picklists in Lightning Components.

<aura:component >
    <aura:attribute name="parentOptions" type="List"/>
    <aura:attribute name="dependentPicklist" type="Object"/>
    <aura:attribute name="dependentOptions" type="List"/>
    <aura:attribute name="disabledPick" type="Boolean" default="true"/>
    <aura:handler name="init" value="{!this}" action="{!c.doInit}"/>
    <div class="slds-container--center slds-container--small slds-m-top--small">
        <div class="slds-form--stacked">
            <lightning:select name="parentPicklist" label="Country" aura:id="parentPicklist" onchange="{!c.PickChange}">
                <option value="">None</option>
                <aura:iteration items="{!v.parentOptions}" var="p">
                    <option value="{!p.value}">{!p.text}</option>
            <lightning:select name="dependentPicklist" label="Cities" disabled="{!v.disabledPick}">
                <option value="">None</option>
                <aura:iteration items="{!v.dependentOptions}" var="d">
                    <option value="{!d.value}">{!d.text}</option>
    doInit : function(component, event, helper) {
        var pVals = [
            {text:"India", value: "India"},
            {text:"USA", value: "USA"}

        var dPick = {
            "India" : [
                {text:"Hyderabad", value: "Hyderabad"},
                {text:"Chennai", value: "Chennai"}
            "USA" : [
                {text:"San Francisco", value: "San Francisco"},
                {text:"Chicago", value: "Chicago"}

        component.set('v.parentOptions', pVals);
        component.set('v.dependentPicklist', dPick);


    PickChange : function(component, event, helper) {
        var parentValue = component.find('parentPicklist').get('v.value');
        component.set('v.dependentOptions', component.get('v.dependentPicklist')[parentValue]);

        if(parentValue != '')

That is it! We learnt how to Create Dependent Picklists in Lightning Components.
Cool one, Right?

I have also created a demo lightning app so that you can play around with it yourself:

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