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+---
+Title: '.setAttribute()'
+Description: 'Sets the attribute of a specified element.'
+Subjects:
+  - 'Web Development'
+  - 'Web Design'
+Tags:
+  - 'Attributes'
+  - 'DOM'
+CatalogContent:
+  - 'introduction-to-javascript'
+  - 'paths/front-end-engineer-career-path'
+---
+
+The **`.setAttribute()`** method of the `Element` interface sets or updates an attribute of the specified element. If the given attribute already exists, its value is updated; otherwise, a new attribute is created with the given name and value.
+
+## Syntax
+
+```pseudo
+elm.setAttribute(name, value);
+```
+
+- `elm`: The element on which the `.setAttribute()` method is called.
+- `name` (string): The name of the attribute to set (e.g., `"class"`, `"id"`, `"href"`).
+- `value` (string): The value to assign to the specified attribute.
+
+## Example
+
+This example sets the `"name"` attribute of a button element to `"helloButton"`:
+
+```js
+const button = document.querySelector('button');
+
+button.setAttribute('name', 'helloButton');
+```