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| + | ====== JavaScript ====== | ||
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| + | ===== Definition ===== | ||
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| + | **JavaScript** is a programming language used to implement additional functions in [[HTML]]. JavaScript makes it possible to e.g. check input fields or display calendars. | ||
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| + | There are also negative examples of JavaScript use (e.g. pop-up windows that common pop-up blockers can't block anymore). Many [[browser|browsers]] offer the possibility to deactivate JavaScript but this also limits the user's possibilities a lot. | ||
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| + | ===== Use===== | ||
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| + | JavaScript was developed for fast execution and is integrated in the browsers. [[crawler|Crawlers]] usually can't interpret JavaScript code and search engines ignore it. Particularly from an SEO point of view this is an important thing to keep in mind. | ||
