The Number isFinite() method

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Returns true if the passed value is a finite number. Anything else, booleans, strings, objects, arrays, returns false:

Number.isFinite(1) //true
Number.isFinite(-237) //true
Number.isFinite(0) //true
Number.isFinite(0.2) //true

Number.isFinite('Flavio') //false
Number.isFinite(true) //false
Number.isFinite({}) //false
Number.isFinite([1, 2, 3]) //false