How to pass the color code value from a child LWC component to parent lightning aura component using LWC Custom Event & Dispatch Event | how to pass value from lwc to aura component salesforce

Hey guys, today in this post we are going to learn about How to pass the color code value from a Child LWC Component to Parent Lightning Aura Component using LWC Dispatched Event.

Files we used in this post example:-

colorPickerLwc.html	Lightning Web Component HTML	It is child component and calling into colorPickerLwcCmp.cmp.
colorPickerLwc.js	Lightning Web Component JavaScript	It is holding ColorPicker function with Custom Event & Dispatch Event and sending the color value to Aura Component.
colorPickerLwcCmp.cmp	Lightning Web Component HTML	It is Parent Aura Component and it’s hold Form Input field and color value that is getting from child component..
colorPickerLwcCmpController.js	Lightning Web Component JavaScript	It is holding colorBgApply function and it is used for set the color value into input field label and border box.
colorPickerLwcApp.app	Component Application	It is used for call the parent component to preview on browser.

Don’t forget to check out:- In LWC communication how to pass the multiple values from parent component to child component through component JavaScript Method in salesforce lightning web component Click Here For More Information

Live Demo

You can download file directly from github by Click Here.

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Step 1:- Create Lightning Web Component : colorPickerLwc.html

SFDX:Lightning Web Component >> New >> colorPickerLwc.html

colorPickerLwc.html [Lightning Web Component HTML]

```
  <template>
```

    <lightning-card title="Apply color code from Lwc to aura component">

        <div class="slds-wrap slds-grid">

            <div class="slds-col slds-size_6-of-12 slds-p-horizontal--small slds-m-bottom--medium slds-text-align--left">

                <lightning-input type="color" name="color-picker" onchange={colorHandleChange}></lightning-input>

```
            </div>
```
```
        </div>
```
```
 
```
```
       <br/><br/>
```
```
   
```

<div style="border:1px #ddd solid; padding:10px; background:#eee; margin:40px 0;">

```
 
```

            <p data-aura-rendered-by="435:0"><img src="https://www.w3web.net/wp-content/uploads/2021/05/thumbsUpLike.png" width="25" height="25" style="vertical-align:top; margin-right:10px;" data-aura-rendered-by="436:0"><strong data-aura-rendered-by="437:0"><span style="font-size:16px; font-style:italic; display:inline-block; margin-right:5px;">Don't forget to check out:-</span><a href="https://www.w3web.net/" target="_blank" rel="noopener noreferrer" style="text-decoration:none;" data-aura-rendered-by="440:0">An easy way to learn step-by-step online free Salesforce tutorial, To know more Click  <span style="color:#ff8000; font-size:18px;" data-aura-rendered-by="442:0">Here..</span></a></strong></p>

```
 
```
```
            <br/><br/>
```

            <p data-aura-rendered-by="435:0"><img src="https://www.w3web.net/wp-content/uploads/2021/07/tickMarkIcon.png" width="25" height="25" style="vertical-align:top; margin-right:10px;" data-aura-rendered-by="436:0"><strong data-aura-rendered-by="437:0"><span style="font-size:17px; font-style:italic; display:inline-block; margin-right:5px; color:rgb(255 128 0);">You May Also Like →</span> </strong></p>

            <div style="display:block; overflow:hidden;">

                <div style="width: 50%; float:left; display:inline-block">

                    <ul style="list-style-type: square; font-size: 16px; margin: 0 0 0 54px; padding: 0;">

                        <li><a href="https://www.w3web.net/lwc-get-set-lightning-checkbox-value/" target="_blank" rel="noopener noreferrer">How to get selected checkbox value in lwc</a></li>

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                    </ul>
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            </div>
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```

            <div style="width: 50%; float:left; display:inline-block">

                    <ul style="list-style-type: square; font-size: 16px; margin: 0 0 0 54px; padding: 0;">

                        <li><a href="https://www.w3web.net/display-account-related-contacts-lwc/" target="_blank" rel="noopener noreferrer">display account related contacts based on account name in lwc</a></li>

                        <li><a href="https://www.w3web.net/create-lightning-datatable-row-actions-in-lwc/" target="_blank" rel="noopener noreferrer">how to insert a record of account Using apex class in LWC</a></li>

                        <li><a href="https://www.w3web.net/fetch-picklist-values-dynamic-in-lwc/" target="_blank" rel="noopener noreferrer">how to get picklist values dynamically in lwc</a></li>

                        <li><a href="https://www.w3web.net/edit-save-and-remove-rows-dynamically-in-lightning-component/" target="_blank" rel="noopener noreferrer">how to edit/save row dynamically in lightning component</a></li>

                        <li><a href="https://www.w3web.net/update-parent-object-from-child/" target="_blank" rel="noopener noreferrer">update parent field from child using apex trigger</a></li>

```
                    </ul>
```
```
                </div>
```

               <div style="clear:both;"></div>

```
               <br/>
```

                <div class="youtubeIcon">

                    <a href="https://www.youtube.com/channel/UCW62gTen2zniILj9xE6LmOg" target="_blank" rel="noopener noreferrer"><img src="https://www.w3web.net/wp-content/uploads/2021/11/youtubeIcon.png" width="25" height="25" style="vertical-align:top; margin-right:10px;"/> <strong>TechW3web:-</strong> To know more, Use this <span style="color: #ff8000; font-weight: bold;">Link</span> </a>

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                </div>
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    </div>
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```
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</div>
```
```
 
```
```
  
```
```
 
```
```
    </lightning-card>
```
```
</template>
```

Step 2:- Create Lightning Web Component : colorPickerLwc.js

SFDX:Lightning Web Component >> New >> colorPickerLwc.js

colorPickerLwc.js [LWC JavaScript File]

   import { LightningElement } from 'lwc';

```
 
```

export default class ColorPickerLwc extends LightningElement {

```
  colorHandleChange(event){
```

      const colorInpCodeVal = event.target.value;

      const inpColorCodeEvent = new CustomEvent('changecolorbg',{

```
          detail:{colorInpCodeVal},
```
```
      });
```

      this.dispatchEvent(inpColorCodeEvent);

```
    }
```
```
 }
```

Step 3:- Create Lightning Web Component : colorPickerLwc.js-meta.xml

SFDX:Lightning Web Component >> New >> colorPickerLwc.js-meta.xml

colorPickerLwc.js-meta.xml [LWC Meta Data XML]

   <?xml version="1.0" encoding="UTF-8"?>

<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata">

```
    <apiVersion>50.0</apiVersion>
```
```
    <isExposed>false</isExposed>
```
```
</LightningComponentBundle>
```

Create Lightning Component and Controller

Step 4:- Create Lightning Component : colorPickerLwcCmp.cmp

From Developer Console >> File >> New >> Lightning Component

colorPickerLwcCmp.cmp [Lightning Component File]

   <aura:component implements="flexipage:availableForAllPageTypes">

<aura:attribute name="bgColorCode" type="String"/>

```
 
```
```
<lightning:card>
```
```
    <aura:set attribute="actions">
```

        <c:colorPickerLwc onchangecolorbg="{!c.colorBgApply}"/>

```
    </aura:set>
```
```
 
```

    <div class="slds-p-horizontal_small">

```
 
```

        <h2 style="font-size:18px;"><b style="{!'color:' + v.bgColorCode}">Using Custom Event and Dispatch Event in LWC to Apply Color Code from LWC to Aura Component</b></h2>   <br/>

```
 
```
```
 
```

      <div style="{!'border:' + '1px solid ' + v.bgColorCode + ';' + 'box-shadow:' + '0px 0px 5px ' + v.bgColorCode + ';'}">

```
 
```

        <div class="slds-wrap slds-grid" style="{!'background-color:' + v.colorCodeText}">

            <div class="slds-col slds-size_6-of-12 slds-p-horizontal--small slds-m-bottom--medium">

```
 
```

                <div class="slds-form-element">

                    <label class="slds-form-element__label" style="{!'color:' + v.bgColorCode}">Name</label>

                        <div class="slds-form-element__controller">

                            <ui:inputText class="slds-input" />

```
                        </div>
```
```
                </div>
```
```
            </div>
```

            <div class="slds-col slds-size_6-of-12 slds-p-horizontal--small slds-m-bottom--medium">

                <div class="slds-form-element">

                    <label class="slds-form-element__label" style="{!'color:' + v.bgColorCode}">Email</label>

                        <div class="slds-form-element__controller">

                            <ui:inputEmail class="slds-input" />

```
                        </div>
```
```
                </div>
```
```
            </div>
```

            <div class="slds-col slds-size_6-of-12 slds-p-horizontal--small slds-m-bottom--medium">

                <div class="slds-form-element">

                    <label class="slds-form-element__label" style="{!'color:' + v.bgColorCode}">Phone</label>

                        <div class="slds-form-element__controller">

                            <ui:inputPhone class="slds-input" />

```
                        </div>
```
```
                </div>
```
```
            </div>
```
```
 
```
```
        </div>
```
```
 
```
```
     </div>
```
```
  </div>
```
```
</lightning:card>
```
```
</aura:component>
```

Step 5:- Create Lightning Component : colorPickerLwcCmpController.js

From Developer Console >> File >> New >> Lightning Component >> JavaScript Controller

colorPickerLwcCmpController.js [JavaScript Controller]

```
  ({
```

    colorBgApply : function(component, event, helper) {

       component.set("v.bgColorCode",event.getParam('colorInpCodeVal'));

```
    }
```
```
})
```

Create Lightning Application

Step 6:- Create Lightning Application : colorPickerLwcApp.app

From Developer Console >> File >> New >> Lightning Application

colorPickerLwcApp.app [Component Application File]

   <aura:application extends="force:slds">

```
   <c:colorPickerLwcCmp/>
```
```
</aura:application>
```

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FAQ (Frequently Asked Questions)

How do I transfer record ID from LWC to Aura?

receiveData(stringToSend) line in the passDataToLWC method in the Aura Components Javascript controller. This is finding the lwc that we imported into our Aura Component by its aura:id and then calling the receiveData method in the LWC (the method with the @api decorator) and passing it data.

How do you call a LWC component in aura?

To call a method defined in a Lightning web component from an Aura component, give the Lightning web component an aura:id and use cmp. find() , just as you do to reference an Aura component. For example, cmp. find('childLwc').

Can we use LWC inside aura?

It is possible to include LWC in Aura, but not the other way around as the generic elements cannot be added to the custom components.

Vijay Kumar

Hi, This is Vijay Kumar behind the admin and founder of w3web.net. I am a senior software developer and working in MNC company from more than 8 years. I am great fan of technology, configuration, customization & development. Apart of this, I love to write about Blogging in spare time, Working on Mobile & Web application development, Salesforce lightning, Salesforce LWC and Salesforce Integration development in full time. [Read full bio] | | The Sitemap where you can find all published post on w3web.net