Select multiple FileType refiners by drag & drop in SharePoint 2013 Search Center

With the help of HTML5, CSS and Javascript I customized the search UI to make it possible to select multiple FileType refiners by drag & drop the icon I've placed in front of the Result types into a special refiner box.

Here's a sneak preview of the concept:

Passed the exam 70-480.

Today I passed the Microsoft exam 70-480 Programming in HTML5 with JavaScript and CSS3.

FREE course & exam: Developing in HTML5 with JavaScript and CSS3 Jump Start

This course provides an accelerated introduction to HTML5, CSS3, and JavaScript and helps students gain basic HTML5/CSS3/JavaScript programming skills. This course is an entry point into both the Web application and Windows Store apps training paths and helps prepare learners for Microsoft exam 70-480. The course focuses on using HTML5/CSS3/JavaScript to implement programming logic, define and use variables, perform looping and branching, develop user interfaces, capture and validate user input, store data, and create well-structured applications.
This course is also useful for developers of SharePoint-hosted Apps.

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Free ebooks on HTML, CSS, and JavaScript.