Which one appeared earlier, H5 or JS?

JavaScript (JS) was born in 1995, nearly 20 years earlier than HTML5. JS provides interactiveness to web pages, while HTML5 emerged in 2014, providing more multimedia functions. The two depend on each other and jointly promote the development of web technology.

Which one appears first, H5 or JS? This question is awesome! Simply put, JS is much earlier than H5. It's like asking who invented the car or car tires first. The answer is obvious, right?

JavaScript, referred to as JS, was born in 1995. At that time, in order to make web pages more lively, Netscape Company created this language no longer just static text and pictures. Its original goal is very simple: to make the web page move. Thinking about web pages in that era, it feels cool to have a scrolling subtitle, and JS meets this demand. It runs directly in the browser without the need for server-side participation, which was a breakthrough at the time.

HTML5, or the fifth version of HTML, was officially completed in 2014. Although HTML has existed and evolved earlier, HTML5 has truly added a lot of features, such as <video></video> , <audio></audio> , <canvas></canvas> , etc. These tags allow web developers to process multimedia content more conveniently, and also make the interactivity of web pages a qualitative leap. Many of these new features require JS to drive and control.

Therefore, JS is one of the cornerstones of HTML5. Without JS, many cool features of HTML5 cannot be implemented. It's like building a house, JS is the foundation and frame, HTML5 is the wall and decoration. You can't have a decoration first and then a house, right?

Of course, this is just a simplified metaphor. The actual situation is much more complicated. The evolution of HTML is a continuous process, and JS is also constantly developing, and they are mutually promoting and dependent relationships. But judging from the time of its birth, JS is undoubtedly earlier. Understanding this will help you better understand the history and development context of web front-end development.

By the way, let me add that the early JS functions were relatively simple, but later it gradually grew and developed and developed various frameworks and libraries, such as jQuery, React, Angular, etc. These tools greatly improved the development efficiency of JS and enriched the interactive experience of web pages. The emergence of HTML5 provides a broader stage for JS, allowing it to play a greater role. The two complement each other and jointly promote the development of Web technology.

Finally, if you want to gain a deeper understanding of the history of JS and HTML5, it is recommended that you search for relevant information, such as MDN Web Docs, where there are very detailed documentation and explanations. I believe you will gain more!

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