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language object - "the global object"

[WHAT]

1. ] you don't create "the global object", it is created automatically,
1. ] for each new window in your web site/application
2. ] it contains
1. ] the properties and methods(functions) listed below
2. ] AND any 'globally scoped' objects that "your code" contains 
3. ] "the global object" is "global" in "scope"
1. ] so you can access it's(properties/methods) from anywhere in your
4. ] do not confuse this with the ...
1. ] the "Object object" -
2. ] "global scope" - which refers to 'any object variables' that you can access from anywhere in your code.

[WHY]

1. [properties]
1. ] undefined -
2. ] Infinity -
3. ] Nan -
4. ] Null -
2. [methods]
1. ] eval()
2. ] uneval()
3. ] isFinite()
4. ] isNaN()
5. ] parseFloat()
6. ] parseInt()
7. ] decodeURI()
8. ] decodeURIComponent()
9. ] encodeURI()
10. ] encodeURIComponent()
11. ] escape()
12. ] unescape()

[WHERE]

1. ] 'the global object' exists
1. ] on every 'web page' (aka window) that you use

[WHEN]

1. ]  you want to use methods that belong to 'the global object' like ...  
1. ] encoding and decoding url's
2. ] you want to create an object variable that is available from anywhere in your code
1. ]

[EXAMPLE]

1. ] var numericValue =parseInt("66"); // would return the numberic value of 66 from the string value of "66".

[HOW-TO]

1. ] check for undefined
2. ] decodeURI
3. ] encodeURI

[REFERENCE]

1. ] http://www.w3schools.com/jsref/jsref_obj_global.asp 
2. ] https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects
3. ] understanding global - the global object and variables with global scope

Details

ID: 2706

NAME: Global

DESCRIPTION: ]javascript languages NATIVE 'global' object

AUTHOR: article.author/s

EDITOR: article.editor/s

PUBLISHER: article.publisher/s

STATUS: Write

PRIORITY: -5

OWNER ID: 75

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