JavaScript is a scripting language used to add dynamic functionality to web pages. JavaScript is placed directly into a web page’s HTML and is used to add interactivity, such as user feedback and input validation, to otherwise static pages. JavaScript also interacts directly with items on a web page, such as input fields and buttons, so it can be used to update their attributes. JavaScript can be used, for example, to keep track of values entered by a user, add them and provide the total.
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