Hey guys, today in this post we are going to learn about How to add custom style css and change the text color & text size through JavaScript in lightning web component – LWC.
Files we used in this post example
lwcApplyCss.html | Lightning Web Component HTML | Template HTML file for used to write HTML element for user interface. |
lwcApplyCss.js | Lightning Web Component JavaScript | It is holding onclick functionality for add custom style CSS to change the text color and text size. |
lwcApplyCss.js-meta.xml | XML Meta File | It is used for where this lightning web component you want to exposed. |
lwcApp.app | Lightning Application File | It is used for call the component and preview on browser.. |
- Don’t forget to check out:- Adding a Custom Style CSS for Specific Role & Profile in Salesforce Click Here For More Information
Live Demo
Other related post that would you like to learn in LWC
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Step 1:- Create Lightning Web Component : lwcApplyCss.html
SFDX:Lightning Web Component >> New >> lwcApplyCss.html
lwcApplyCss.html [Lightning Web Component HTML]
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<template> <lightning-card title="Apply Custom Style CSS in LWC through Javascript" custom-icon="custom:icon15"> <div class="containerOver slds-p-around--medium slds-m-horizontal--medium" > <h1>Easy to learn Step-by-Step online tutorial from www.w3web.net</h1> <p class="listItem">Hi welcome to online tutorial www.w3web.net</p> <p class="listItem">w3web.net is the place where you can learn step-by-step about Blog, WordPress, Salesforce Lightning Component, Lightning Web Component (LWC), Visualforce, Technical of Computer Application, Salesforce Plugin, JavaScript, Jquery, CSS, Computer & Accessories, Software Configuration, Customization, Development and much more…</p></br></br> <div class="slds-text-align--center"><lightning-button label="Change Styling CSS" class="cssStyleBtn" variant="brand" onclick={customStyleChange}></lightning-button></div> </div> <br/><br/> <!--Start RelatedTopics Section--> <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> <li><a href="https://www.w3web.net/display-account-related-contacts-in-lwc/" target="_blank" rel="noopener noreferrer">how to display account related contacts based on AccountId 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 create lightning datatable row actions in lwc</a></li> <li><a href="https://www.w3web.net/if-and-else-condition-in-lwc/" target="_blank" rel="noopener noreferrer">how to use if and else condition in lwc</a></li> <li><a href="https://www.w3web.net/get-selected-radio-button-value-and-checked-default-in-lwc/" target="_blank" rel="noopener noreferrer">how to display selected radio button value in lwc</a></li> </ul> </div> <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> </div> </div> </div> <!--End RelatedTopics Section--> </lightning-card> </template> |
Step 2:- Create Lightning Web Component : lwcApplyCss.js
SFDX:Lightning Web Component >> New >> lwcApplyCss.js
lwcApplyCss.js [LWC JavaScript File]
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import { LightningElement } from 'lwc'; export default class LwcApplyCss extends LightningElement { renderedCallback(){ this.template.querySelector("h1").style.color="blue"; this.template.querySelector("h1").style.textAlign="center"; this.template.querySelector("h1").style.fontSize="16px"; this.template.querySelector(".containerOver").style.boxShadow="0px 0px 5px #0007ea"; this.template.querySelectorAll(".listItem").forEach(item=>{ Object.assign(item.style, {color:'green',textAlign:'center',fontSize:'15px'}); }); } customStyleChange(event){ this.template.querySelector("h1").style.fontSize="22px"; this.template.querySelector("h1").innerHTML="Easy to learn LWC tutorial from w3web.net"; this.template.querySelector(".containerOver").style.boxShadow="0px 0px 5px #ff0000"; this.template.querySelectorAll(".listItem").forEach(item=>{ Object.assign(item.style, {color:'red',textAlign:'center',fontSize:'18px'}); }); } } |
Step 3:- Create Lightning Web Component : lwcApplyCss.js-meta.xml
SFDX:Lightning Web Component >> New >> lwcApplyCss.js-meta.xml
lwcApplyCss.js-meta.xml [LWC Meta Data XML]
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<?xml version="1.0" encoding="UTF-8"?> <LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata"> <apiVersion>45.0</apiVersion> <isExposed>true</isExposed> <targets> <target>lightning__AppPage</target> <target>lightning__RecordPage</target> <target>lightning__HomePage</target> <target>lightning__Tab</target> </targets> </LightningComponentBundle> |
Start Lightning Application
Step 4:- Create Lightning Application : lwcApp.app
From Developer Console >> File >> New >> Lightning Application
lwcApp.app [Component Application File]
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<aura:application extends="force:slds"> <c:lwcApplyCss/> </aura:application> |
Further post that would you like to learn in LWC
How do you install styling in LWC?
LWC doesn't reflect a component's custom public properties into their corresponding HTML attributes. To give identity to a child element for styling, use a class attribute or a data-* attribute.
How do you add custom CSS in lightning component?
You can add CSS to a lightning component bundle by clicking the STYLE button in the Developer Console sidebar. after click on the STYLE button on component bundle, new CSS file is create with . css ext.
How do I add SLDS to Aura component?
You can use extends='force:slds' in lightning application. So it will automatically apply slds to lightning components that are related to application.
Related Topics | You May Also Like
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