Let's understand value providers in Lightning Components, before diving deeper into attributes. Value providers hold data and provide a way to access that data. Lightning Components have two types of value providers out of the box. They are listed in the following table:
| Value provider | Description |
| v (view) |
This allows access to the value of the attribute in the Component Markup. |
| c (controller) |
This allows you to wire events and actions . |
An attribute is a placeholder to hold data. You can treat attributes like Java variables. The following is the syntax to define attributes:
<aura:component> <aura:attribute name="searchString" type="String" default="lighnting components"/></aura:component>
Name ...
