devdocs - Documentation of all APIs at one place
DevDocs contains collection of API documentations in a fast, organized, and searchable interface.
We can find documentation for different APIs like HTML, CSS, Javascript, JQuery, Angular, Backbone, C, C++..
We can search a library or keyword. It is available offline and can be installed in browsers and mobile devices. Keyboard shortcuts are available. We can disable or enable a particular library from the list. It is free and opensource.
http://devdocs.io/javascript/
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