It helps us in DOM scripting and an event management and also it provides us an abstraction over the complex JavaScript functions.
DOJO has great support for integrating with back end data store. It works seamlessly with REST services. We even extended Dojo's JSON-Rest-Store for adding custom encoding or decoding and It worked like a charm.
We can use ready made inbuilt components looks like,
1. Arrays,
2. Object,
3. Classes and
4. Many more
It is easily with help of including an <input> tag in the HTML pages.
We can start and developed web apps in shortens of time and It also providing us a well-conceived APIs and set of tools for maintaining our web apps.
We can downloaded the DOJO Toolkit from http://dojotoolkit.org/
I hope this information helped you! Thank you!