Kompozer tutorial for beginners7/3/2023 On a slow network, or on a cheaper, low-powered device, this can result in an excruciatingly slow load and is a heavy drain on the battery. When it’s all downloaded, the user’s device must parse and execute the JavaScript before it can even start to construct the page. Modern fashionable development techniques, such as React, require a lot of JavaScript to be sent to the user. Browsers incrementally render HTML-that is, they will display a partially downloaded web page to the user while the browser awaits the remaining files from the server. If your site is based on good HTML, it will load fast. When Tim Berners-Lee invented the World Wide Web in 1989, there was no JavaScript, no CSS, only HTML.Īlthough HTML has changed greatly over 30 years, expanding from its original 18 tags to well over 120, it retains its central importance: it is the foundational technology for the web.
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