What is "jquery-mobile"

jQuery Mobile is an HTML5-based user interface system designed to make websites and applications that are accessible on all smartphone, tablet and desktop-responsive devices.

• Compatible with all major desktop browsers as well as all major mobile platforms including Android, iOS, Windows Phone, Blackberry, Webos, Symbian.
• Built with jQuery core so it has a minimal learning curve for people who are already familiar with jQuery syntax.
• Allows the creation of custom themes.
• Limited and lightweight dependencies to optimize speed.
• The same underlying code base will automatically scale to any screen.
• UI widgets that are touch-optimized and platform-independent.

Link to official page: Link