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console.log(typeof 42); // number console.log(typeof 3.14); // number console.log(0.1 + 0.2); // 0.30000000000000004 console.log(Number.MAX_SAFE_INTEGER); // 9007199254740991 console.log(NaN === NaN); // false console.log(Number.isNaN(NaN)); // true console.log(Number.isNaN('hello')); // false (unlike global isNaN) console.log(1 / 0); // Infinity console.log(-1 / 0); // -Infinity console.log(Number.isFinite(Infinity)); // false console.log(Number.isFinite(42)); // true
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