JavaScript is a high level dynamic and weakly typed web scripting language used for creating dynamic and interactive web pages Dynamic JavaScript code can change and react to user input and events Weakly typed JavaScript automatically converts data types as needed Interpreted JavaScript code is executed by a browser or a runtime environment without prior compilation JavaScript Overview Key Features Usage JavaScript is used for Adding interactivity to web pages Creating web and mobile apps Building web servers Game development Automating repetitive jobs Syntax JavaScript syntax includes Variables let const var Data types number string boolean object array null undefined Operators JavaScr Control structures if else else if switch for while do while Functions regular functions arrow functions Object oriented programming classes objects prototypes Popular Libraries and Frameworks jQuery React Angular Vue js Node js
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