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propertyIsEnumerable Property

Returns a Boolean value indicating whether a specified property is part of an object and if it is enumerable.

object.propertyIsEnumerable(propName)

Arguments

object
Required. Instance of an object.
propName
Required. String value of a property name.

Remarks

The propertyIsEnumerable property returns true if propName exists in object and can be enumerated using a For...In loop. The propertyIsEnumerable property returns false if object does not have a property of the specified name or if the specified property is not enumerable. Typically, predefined properties are not enumerable while user-defined properties are always enumerable.

The propertyIsEnumerable property does not consider objects in the prototype chain.

Example

The following example illustrates the use of the propertyIsEnumerable property.

var a : Array = new Array("apple", "banana", "cactus");
print(a.propertyIsEnumerable(1));

The output of this program is:

true

Requirements

Version 5.5

See Also

Properties

Applies To: Object Object

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