where we use javascript and for which purpose we use
javascript how?
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Answer Posted / jitendra
JavaScript was designed to add interactivity to HTML pages
JavaScript is a scripting language
A scripting language is a lightweight programming language
A JavaScript consists of lines of executable computer code
A JavaScript is usually embedded directly into HTML pages
JavaScript is an interpreted language (means that scripts
execute without preliminary compilation)
Everyone can use JavaScript without purchasing a license
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
computer
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