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isFiniteNumber()

isFiniteNumber(val): val is number

Determine if the given value is a finite number. Does not include infinities, NaN, or strings that look like numbers.

Parameters​

val​

unknown

The value to check whether or not it is a finite number value.

Returns​

val is number

Example​

isFiniteNumber(1.23) // true
isFiniteNumber(Infinity) // false
isFiniteNumber(NaN) // false
isFiniteNumber('1.23') // false