What can a JavaScript do

What can a JavaScript do?. JavaScript gives HTML designers a programming tool – HTML authors are normally not programmers, but JavaScript is a scripting language with a very simple syntax! Almost anyone can put small “snippets” of code into their HTML pages

JavaScript can put dynamic text into an HTML page – A JavaScript statement like this: document.write(“<h1>” + name + “</h1>”) can write a variable text into an HTML page

JavaScript can react to events – A JavaScript can be set to execute when something happens, like when a page has finished loading or when a user clicks on an HTML element

JavaScript can read and write HTML elements – A JavaScript can read and change the content of an HTML element

JavaScript can be used to validate data – A JavaScript can be used to validate form data before it is submitted to a server. This saves the server from extra processing

JavaScript can be used to detect the visitor’s browser – A JavaScript can be used to detect the visitor’s browser, and – depending on the browser – load another page specifically designed for that browser

JavaScript can be used to create cookies – A JavaScript can be used to store and retrieve information on the visitor’s compute

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