JavaScript

JavaScript

  • It is an interpreted programming language with object-oriented capabilities

  • JavaScript is a dynamic computer programming language.
  • It is lightweight and most commonly used as a part of web pages, whose implementations allow client-side script to interact with the user and make dynamic pages.

 

  • Client-side JavaScript:
  • Client-side JavaScript is the most common form of the language. The script should be included in or referenced by an HTML document for the code to be interpreted by the browser.
  • It means that a web page need not be a static HTML, but can include programs that interact with the user, control the browser, and dynamically create HTML content.
  • The JavaScript client-side mechanism provides many advantages over traditional CGI server-side scripts. For example, you might use JavaScript to check if the user has entered a valid e-mail address in a form field.

Advantages of JavaScript

  • Less server interaction− You can validate user input before sending the page off to the server. This saves server traffic, which means less load on your server.
  • Immediate feedback to the visitors− They don’t have to wait for a page reload to see if they have forgotten to enter something.
  • Increased interactivity− You can create interfaces that react when the user hovers over them with a mouse or activates them via the keyboard.
  • Richer interfaces − You can use JavaScript to include such items as drag-and-drop components and sliders to give a Rich Interface to your site visitors
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