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Beginner JavaScript

Jagadesh G
01/02/2018 0 0

1. Javascript is a programming language that adds interactivity to your website.

 

2. JavaScript is a programming language that allows you to implement complex things on web pages.

 

3. Javascript is primarily used as a client-side scripting language .i.e it runs on our browser.

 

4. Java simple, easy to understand with advanced features.

 

5. JavaScript 2.0 conforms to Edition 5 of the ECMAScript standard.

 

6. Javascript is fundamental for learning popular front-end frameworks and  libraries.

 

Front-end of the web application :

  • HTML is the markup language that we use to structure and give meaning to our web content, for example defining paragraphs, headings, and data tables, or embedding images and videos in the page.
  • CSS is a language of style rules that we use to apply styling to our HTML content, for example setting background colors and fonts, and laying out our content in multiple columns.
  • JavaScript is a scripting language that enables you to create dynamically updating content, control multimedia, animate images, and pretty much everything else. (Okay, not everything, but it is amazing what you can achieve with a few lines of JavaScript code.)

Language Fundamentals :

 

1. Variables: A variable can be declared with a keyword var.

  • var number1 = 1000;
  • var myname = "Asha" ;
  • Here we have declared variables and assigned values to them.
  • Strings are double or single quoted.
  • Variables declared outside function has global scope and is called Global variables.
  • Variables declared inside function has local scope and is called local variables. 
  • Variables names can start with alphabets or  _ .
  • Names cannot start with numbers. 
  • They are case sensitive.

JavaScript Variable c five data types

1. String

2. Number

3.Object

4.Boolean

5.Array

6. Object

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