We mainly need to dynamically adjust the appearance of LWC components based on user interactions or data changes. This blog will explore how to add style elements in js lwc and applying CSS classes to elements within your LWC components using JavaScript.

To customize the appearance of LWC components, we create a CSS file with the same name as the component. This helps us to define specific styles for that component. In this blog post, we will two common cases where dynamic styling can be particularly useful.

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Use case 1

You want to allow the admin to select the theme styling like background color, and button color in your app. Based on its selection, that changes in the User Interface. To get this, you need to declare a property in your js file, and the property can be changed according to your settings. That property can be utilized as a class.

SampleApp.css

sampleApp.js

Use case 2

You want to add or delete styling from any element in your app

What if I have a div, and I want to add or remove a class from my div element.

sampleApp.html

sampleApp.css

sampleApp.js

Here, we have explored how to add style elements in js lwc. This approach can be applied to a wide range of dynamic styling cases. If you're working on a specific project and require more specialized assistance, our consulting team is available to help. Experienced developers of Hornet Dynamics offer development services across various Salesforce products.

How to apply style dynamically in lwc html?

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