Javascript tutorial

JavaScript is mostly used in millions of millions web page due to this it add validate form, functionality, communicate with serve it make web pages more interactive. Its client side scripting language scripts is run by the web surfer’s browser. JavaScript is object oriented and interpreted language as well.

Interpreted language:

Code is run by the interpreter which is basically built in to the web browsers.

Client side:

When browser is on programs are passed to the computer then computer executes program. Repetitive task performed by Scripting Languages.

Object Oriented:

New objects are created in JavaScript that cannot be inherited from any existing object.

The JavaScript is constructed in such away that script has variables, object or literal. Variable is item which is representative of numbers, text, Boolean values or an object. Literal is the actual number of text, number or Boolean values that are represented by variables and collection of variable is the object.

Operator, control structure functions, action , event  and referencing are other most important part of script.

You must know about the HTML , beginner tutorial, C and C++ before to understand the JavaScript tutorial. JS tutorial contain the basic of JS and practice of programming tips. It tells all about objects and functions JS tutorial is important for those people who want  to make their own JS functions, JS program through tutorial we can understand JS HTML DOM, Syntax, Accessing Elements, Code, Pseudo-Protocol ,Objects, Method, Properties and Event:

DOM is document object model the browser representation of the HTML page as object is DOM, started from the browser window then moves in to the page. In DOM HTML the top level object is always window and offspring of window and all objects means nodes or element is document object that are display on the pages means image, links, forms etc  they are called as descendent of document object.

HTML DOM:

Pseudo-Protocol:

JS Syntax:

It has basic rules like semi colon (;) must be used for  the termination of statement.

It has two types of comments

Single line comments (Always start from//)

Multi line comments (Start with /* and end with */)
Acessing Elements:

Element can access by dot and square bracket notation

Dot notation (  Access element and other object by dot notation which is started with window and by name or id object can be access )

Square bracket notation (JS document has numbers of form elements called as children. The specific form question can be represented by the number that are inside the square bracket[ ]) both notations are interchangeable but most commonly used is dot notation.
Code:

JS code always written as inline. To get information about objects in an HTML page. These pages have methods and properties to explain object, properties and method we observed the code in JavaScript Basics.
Methods:

Method in JS include:

document.write ()

window. Alert()

Event Handler:

We use on click event handler to change the back ground color of the page. Event handler is consider as the attributes that tells the element to listen for specific event that is going to be occur. There are  alot of event handler in JS like on change, on click, on blur, unload, on reset etc.