25 lines
419 B
Markdown
25 lines
419 B
Markdown
---
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title: Attributes.add()
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---
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The `Attributes.add()` method adds `value` to the attribute identified by
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`key`.
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## Signature
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```js
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Attributes attributes.add(string key, string value)
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```
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## Example
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```js
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const attr = new Attributes()
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.add('class', 'classA')
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.add('class', 'classB')
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```
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## Notes
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Adding multiple values to the same key will result in them being joined together
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(with a space) when rendering.
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