27 lines
721 B
Markdown
27 lines
721 B
Markdown
---
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title: injectCSS
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tags: browser,css,intermediate
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---
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Injects the given CSS code into the current document
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- Use `Document.createElement()` to create a new `style` element and set its type to `text/css`.
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- Use `Element.innerText` to set the value to the given CSS string.
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- Use `Document.head` and `Element.appendChild()` to append the new element to the document head.
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- Return the newly created `style` element.
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```js
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const injectCSS = css => {
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let el = document.createElement('style');
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el.type = 'text/css';
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el.innerText = css;
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document.head.appendChild(el);
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return el;
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};
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```
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```js
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injectCSS('body { background-color: #000 }');
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// '<style type="text/css">body { background-color: #000 }</style>'
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```
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