You can simplify this by checking the first object that is returned from JQuery like so: In this case if there is a truthy value at the first ([0]) index, then assume class exists. Edit 04/10/2013: I’ve created a jsperf test case here.
ReactJS is a JavaScript library, supporting both front-end web and being run on a server, for building user interfaces and web applications. It follows the concept of reusable components. React Native is a mobile framework that makes use of the JavaScript engine available on the host, allowing you to build mobile applications for different platforms … Read more