JSFiddle

JSFiddle is an online IDE service and online community for testing and showcasing user-created and collaborational HTML, CSS and JavaScript code snippets, known as 'fiddles'. It allows for simulated AJAX calls. In 2019, JSFiddle was ranked the second most popular online IDE by the Popularity of Programming Language (PYPL) index based on the number of times it was searched, directly behind Cloud9 IDE, worldwide and in the USA.

Concept 
JSFiddle online IDE is design to serve a single HTML/JS/CSS page into a its visual result. Its interface is minimalist, with 4 main frames, corresponding to editable HTML, JS and CSS fields, completed on the bottom right by the end result. Since early on, JSFiddle adopted smart source-code editor with programming features. As of 2020, JSFiddle uses CodeMirror to support its editable fields, providing with multicursors, syntax highlighting, syntax verification (linter), brace matching, auto indentation, autocompletion, code/text folding, Search and Replace to assist web developers in their actions. On the left, a sidebar allows to integrate external resources such as external CSS stylesheets and/or external JS libraries. The most popular JS frameworks and CSS frameworks being suggested and available via a click. JSFiddle therefor provides easy-to-use starters, allowing

The words can be publicly saved, multiple times, for free, with each version being saved online on URL address with an incremental numbered suffix. The work can therefor be re-accessed later or shared with other parties, still editable into a new different version, or forked into a new line. 

JSFiddle is therefore widely used among web developer sharing simple tests or demos. JSFiddle is widely used on Stackoverflow, the dominant question-answer online forum for the web industry.

History
JSFiddle was created in 2009 by Piotr Zalewa, originally called MooShell. In 2010, the platform was made freely available when Oskar Krawczyk joined.

In 2017, Michał Laskowski and Andrzej Kała joined the company.

References

External links
 https://jsfiddle.net

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