What is "jsfiddle"
jsFiddle is an integrated online development environment that allows users to create and execute code written in Javascript (allowing the use of various Frameworks, HTML and CSS). This tool is often used to provide examples of problems.
The jsFiddle arose from this need to test scripts quickly. Originally developed for Mootools, the tool has been gradually expanding, and today supports major Javascript libraries on the market, such as Mootools, jQuery, YUI, Prototype, Dojo, Glow, Processing, Extjs, Raphael, Right JS, Ember and Underscore.
Its interface is simple and intuitive, simply select the desired library and fill the HTML, CSS and Javascript fields with the desired data to test a script.
Clicking the button Run, it is possible to see the script in action, without the need to create new files or use multiple programs to view it.