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Dictionary.Exists() (Method)

Returns a flag indicating whether a key has an item associated with it in the Dictionary.

Availability:

JScript - 3.0
Internet Explorer - 4.0
Property/method value type:Boolean primitive
JavaScript syntax:IEmyDictionary.Exists(aKey)
Argument list:aKeyA textual key name

Dictionaries are a useful way to collect items together at random intervals. The Dictionary can then be tested later on after the items have been added. This method provides a way to test whether a specific name-value pair has been added to the Dictionary.

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JavaScript Programmer's Reference, Cliff Wootton
Wrox Press (www.wrox.com)

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