Code javascript popups in PURE JAVASCRIPT (no jQuery)


Job Description

Hello, I need a senior JavaScript and CSS developer for code a popup that will appear on third party websites. Because the popup will appear on third party websites, I need that the developer is a senior one, because the popup should not cause problems to the website which hosts the popup.

Here is a demo:

The page is the page of the host website. Click on the "MI PIACE" Facebook button and see what happens: a popup appears at the button of the browser. I need you to code this popup, with this animation.

Browsers compatibility: IE10, IE9, IE8, Firefox, Chrome, Safari, iOS Safari, Chrome Android, iOS Chrome

No jQuery, pure javascript.

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