14. JavaScript Object Intro

Javascript Object Intro

Object - Oriented Programing
Properties
Methods

Object - Oriented Programing

Note that an object is just a special kind of data.
An object has properties and methods

Properties

Length property of the string object to return the number of characters in a string

<script type="text/javascript">
var txt="Hello World!";
document.write(txt.length);
</script>

output: 12

Methods

Methods are the actions that can be performed on objects

<script type="text/javascript">
var str="Hello World!";
document.write(str.toUpperCase());
</script>

output: HELLO WORLD!

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My Favorite Books

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  • Learn HTML and CSS with W3Schools
  • Learn JavaScript and Ajax with W3Schools
  • HTML5 Black Book: Covers Css3, Javascript,XML, XHTML, Ajax, PHP And Jquery
  • HTML5 Application Development Fundamentals: MTA Exam 98-375
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  • Multiple Choice questions in computer science by Timothy J Williams