JavaScript Objects 0

JavaScript Object

• JavaScript is an Object Oriented Programming (OOP)

language

• A JavaScript object has properties and methods

>  Example: String JavaScript object has length property and

toUpperCase() method

<script type="text/javascript">

var txt="Hello World!" document.write(txt.length) document.write(txt.toUpperCase())

</script>

JavaScript Built-in Objects

• String

• Date

• Array

• Boolean

• Math

JavaScript Object vs. Java Object

• Simlarities

> Both has properties and methods

• Differences

>  JavaScript object can be dynamically typed while Java object is statically typed

>  In JavaScript, properties and methods are dynamically added


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