Introduction To Programming

Programming is a way to talk to computers A language like Hindi, English or can be used to talk to a human but for computer we need straight forward  instructions.

What is EcmaScript

EcmaScript is a standard on which javaScript is based it was create to ensure that different documents on javaScript are actually talking about the same language.

Javascript & EcmaScript can almost always be used interchangeally  javascript   is very letaral in what it allow.   

What is javascript

JavaScript (js) is a light-weight object-oriented programming language which is used by several websites for scripting the webpages. It is an interpreted, full-fledged programming language that enables dynamic interactivity on websites when applied to an HTML document. It was introduced in the year 1995 for adding programs to the webpages in the Netscape Navigator browser. Since then, it has been adopted by all other graphical web browsers. With JavaScript, users can build modern web applications to interact directly without reloading the page every time. The traditional website uses js to provide several forms of interactivity and simplicity.

How to execute javaScript

Javascript can be executed right inside one’s browser you  can open the javascript console and strat writing javascript there another way to execute javascript is a  runtime like Node.js which can be instralled  and  used to run javascript code.

Yet another way to executejavascript is by inserting it inside <script> tag of an html document.

Features of javscript 

1.It is a case-sensitive language

2.it is hight weighted and interpreted language.

3.it is provide good control to the user over the web browser.

4. javascript is object-oriented programming language that prototype rathes then using classessfor inheritance.

Application of JavaScript

JavaScript is used to create interactive websites. It is mainly used for:

  • Client-side validation,
  • Dynamic drop-down menus,
  • Displaying date and time,
  • Displaying pop-up windows and dialog boxes (like an alert dialog box, confirm dialog box and prompt dialog box),
  • Displaying clocks etc.