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JavaScript

JavaScript is a programming language used on WebPages to display dynamic effects. The JavaScript code is saved on the user’s computer rather than the web server. JavaScript isn’t good for SEO as search engine spiders have trouble reading JavaScript as they can’t run the script.
 

JPEG

Joint Photographic Experts Group is an image file used to save images, a popular choice on the Internet to show photos. Some other formats are PNG and GIF.

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