# addClass()

Adds a CSS class to a component.

## Signature

`addClass(Object element, String newClass)`

## Parameters

***element*:** Type: `Object`. The component to apply the class on.

***newClass*:** Type: `String`. The CSS class to be applied.

## Sample Code

```javascript
// find a component with aura:id="myCmp" in markup
var myCmp = component.find("myCmp");
$A.util.addClass(myCmp, "myClass");
```