How Can I Add CSS Styles Dynamically Using JavaScript?

Incorporating CSS Using JavaScript

JavaScript offers a robust mechanism for dynamically adding CSS rules to a document. This functionality empowers developers to alter the visual appearance of their web pages without having to modify the HTML markup.

Adding Custom Styles

The most straightforward approach is to create a new style node and append it to the document's head:

<code class="javascript">// Define your custom CSS as text
var styles = `
    .my-class {
        color: red;
        font-weight: bold;
    }
`;

// Create a new style element and set its text content
var styleSheet = document.createElement("style");
styleSheet.textContent = styles;

// Append the style element to the document head
document.head.appendChild(styleSheet);</code>

With this approach, your custom CSS rules will be applied to the document, dynamically enhancing its visual presentation.

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