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isFinite() Method

This method determines whether its parameter is a finite number.

Syntax

isFinite(value)

Returns

True if value is or can be converted to a number; false if value evaluates to NaN, POSITIVE_INFINITY, or NEGATIVE_INFINITY.

Usage

The isFinite() method returns true if number is or can be converted to a number. If the parameter evaluates to NaN, number.POSITIVE_INFINITY, or number.NEGATIVE_INFINITY, the method returns false. For details on the number object, see NaN.

See Also

isNaN() Method