(JavaScript is a web-based language. It was originally used as a way to manipulate certain types of elements in web pages, such as images and table fields, but the development of the language far exceeded its expectations. In addition to scripting as a client browser, JavaScript can now be used to program on a growing number of platforms. For example, it can be used to write server-side code (using. Net or node. JS), application extensions (such as Firefox and Photoshop extensions), mobile applications, and command-line scripts.JavaScript is also a different language. It has no classes, and functions are top-level class objects for many tasks. At first, many programmers thought the language was inefficient, but this view has changed in recent years. Interestingly, languages such as Java and PHP began to add closure and anonymous function features that JavaScript programmers have long liked.JavaScript is a dynamic language that can be configured to look and feel like other languages you're used to. But it may be better to accept the differences between JavaScript and other languages and learn its specific patterns.)
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