Good Knowledge of AJAX/HTML5
Good knowledge about AJAX and HTML5 will help you to make interactive web pages like Google maps, games etc…So if you know how to use them and you know what they do then your value will be increased. Also if you have good skills in CSS3, SVG, HTML5 Audio/Video then definitely you are in high demand.
Good Knowledge of NodeJS
Good Knowledge of Web Frameworks
Frameworks provide structure to the development process by dividing code into components based on functionality. They help developers to build web applications faster and more efficiently. So if you know which framework is best for your client then definitely your company will increase your salary because companies need programmers who can do their work more quickly and easily.
Good command on Mobile Framework
Good Knowledge of Web Socket Protocol
Socket connection lets us exchange data between server and client in real-time and allows us to create real-time apps. Websocket is like a persistent connection that works as a pipe and data flow through this pipe from the server to the client.
Good Knowledge of BackboneJS