How exactly does JavaScript work?
It is essentially a specific programming language that creates interactive elements. Among other things, it can activate content on a page. Websites use it to load faster or to make them more attractive. JavaScript is used by web browsers, so it can also be disabled in them.
JavaScript is essential for AJAX technology. This technology is used in the development of modern websites; it can change the content of a website without the entire page having to reload. This can take a long time and can also reduce your browsing experience. For example, AJAX can submit a newsletter subscription without reloading the page you are currently viewing.
What JavaScript can do:
- It allows cookies to be stored (these can be used, for example, to save certain user settings).
- It is used to validate and submit forms
- Ensures the functionality of certain interactive and graphical elements, such as image sliders
- Creates pop-up windows
- Enables live chat support
- Enables autocomplete when searching or filling in forms or delivery addresses on e-shops
- It can check data in forms
- Enables animations and other playful elements to be added to the website
- Uses AJAX technology to speed up the loading of pages or parts of them
This list is by no means exhaustive. JavaScript is simply essential for a website to function properly. Without it, some pages won’t even load, or will be missing crucial elements.
Some users disable it because they consider it a security risk. However, JavaScript itself cannot harm your computer. It is more important to be careful about which files you download to your computer and which actions you allow your browser to perform.
If pages are displaying incorrectly, check whether you have accidentally disabled it. You can easily check this in your browser. Here you will find detailed instructions on how to check and enable JavaScript.