There are three parts of Java Script:
(1) ECMA Script : stands for European Computer Manufacturers Association
It specifies the core features of that a scripting language should provide and how those feature implemented.
ECMA script defines the following parts of language:
(3) BOM: browser Object model
It allows access and manipulation of browser window
It allows the popup new browser window
It is capable to resize move and close browser window
(1) ECMA Script : stands for European Computer Manufacturers Association
It specifies the core features of that a scripting language should provide and how those feature implemented.
ECMA script defines the following parts of language:
Syntax , Reserved words Types, Operators, Statements Objects, Keyword
A browser Developer must conform to ECMA specification.
(2) DOM: Document object model
It is conversion of html code into tree strucre is called DOM.
It maps out an entire pages as a hierachy of nodes.
Nodes can be added removed replaced and modified easily by using DOM API
We can manipulat CSS with DOM
It allows access and manipulation of browser window
It allows the popup new browser window
It is capable to resize move and close browser window
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