What Is JavaScript


If you want to know what is JavaScript then first of all you need to know what is HTML and CSS. After knowing these language you can proper understand what is JS (JavaScript). In simple terms HTML is a page where we write coding for creating website and CSS is a page where we write coding for website design. And finally JS is basically programming language and it’s main purpose is to interacting your web page front of users.

JavaScript is the programming language of HTML and the web. It makes web page dynamic. It is interpreted programming language with object-oriented capabilities.

About JavaScript

  • JavaScript is the most popular programming language is the world.
  • JavaScript, helps you developing great front-end as well as back-end software’s using different JavaScript based frameworks like – jQuery, Node.JS etc.
  • You do not need any special software for JS because all main Web Browsers support it.
  • You can also create Web Applications, Mobile Apps and Games using JS.
  • A very good thing about JS is that , in JS you can save time by using the already created Libraries and frameworks.

Example Of JavaScriptJS Form

JavaScript can be used in various activities like data validation, displaying popup messages, handling events of HTML elements, modifying CSS, etc. The following sample form uses JavaScript to validate data and change the color of the form.

The responsive menu of this website is also using JS. There is no website in the world that does not use JavaScript or JavaScript-based frameworks.

Way Of Using JavaScript in HTML

  1. Internal : It used if we want to make change in single page.
  2. External : It provides code re usability because single JavaScript file can be used in several html pages.

Software Required for Working With JavaScript

  • Any text editor like – Notepad, Notepad++, Sublime text, Sublime text 3, Visual studio code, Atom, Brackets etc.
  • Any web browser like – Google chrome, Safari, Opera, Microsoft Internet Explorer etc.

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