Document Object Model ( DOM )

 




DOM TREE




Comments

Post a Comment

Popular posts from this blog

1. Introduction of Javascript

Image
  Introduction of JS JavaScript: JavaScript (originally known as LiveScript) is cross-platform, object-based scripting language that was developed by Netscape programmer Brendan Eich for both client side and server side. It is a lightweight programming language that is interpreted by web browser when the web page is loaded. JavaScript is the most popular language and almost easy to learn as HTML. Features of JavaScript Language (JS) 1. JavaScript (JS) is a high-level, interpreted, cross-platform, and open-source programming language. 2. JavaScript (js) is a lightweight object-based scripting programming language that is mainly used in web programming. 3. It supports both client-side and server-side scripting. 4. It is responsible for making web pages interactive and responsive. Like HTML defines the content and structure of web page, CSS styles the layout, and JavaScript make that web page interactive. 5. JS is not a compiled language, but it is an interpreted language. The JavaScript
Read more

2. Datatypes & Variables in Javascript

Image
Datatypes in Javascript 1. Comments There are two types of comments in JavaScript. They are as follows: 1. Single line comment (use // for single line  ) 2. Multiline comment (use /* */  for single line  ) 2. Data Types in JavaScript  - A data type in JavaScript specifies the specific type of value that a variable can store. In other words, a data type is simply a “kind” of value (i.e. data) stored in a variable. - Internally, a variable represents a memory location where data stores. Data is information that we store in computer programs. What is Dynamic Data Types in JavaScript ? JavaScript is a dynamic and loosely typed, or duck typed language.The value we assign to the variable determines its data type. JavaScript automatically handles different types of values and automatically converts values from one type to another. var FirstName = “Shubh” // Holding string. var AccountNumber = 123499 // Holding number. Types of Data types in JavaScript A list of all data types are as follows:
Read more

6. Object and Array in Javascript

  Object in Javascript - An object in JavaScript is an entity or any real-world thing that has a state and behavior. - Here, the state represents properties (characteristics) of an object and behavior represents actions or functionality of an object. - For example, a person is an object. He has properties like black hair, black eyes, fair skin, weight, etc., and actions like eat, sleep, walk, play, study, etc. Object Creation in JavaScript - JavaScript is template based, not class based. Here, we don’t create class to get the object. But, we direct create objects. 1. By object literal 2. By creating an instance of Object directly (using new keyword) 3. Using an object constructor (using new keyword) 1. By object literal - The simplest and the most popular way to create an object in JavaScript is to use object literal. - we create objects with curly braces and  separate properties and values  by using colon (:). Ex :  var objectName = {     propertyName1:value1,     propertyName2:value2
Read more