console.log(typeof 80); >> number console.log(typeof 80n); >> bigint console.log(typeof 'Pen'); >> string console.log(typeof true); >> boolean console.log(typeof null); >> object console.log(typeof NaN); >> number console.log(typeof undefined); >> undefined console.log(typeof Symbol('A')); >> symbol console.log(typeof [10, 20]); >> object console.log(typeof {a:'abc'}); >> object let func = functio
![typeof演算子](https://cdn-ak-scissors.b.st-hatena.com/image/square/109567dea38f038767b69b522241c3660c523a6f/height=288;version=1;width=512/https%3A%2F%2Fwww.javadrive.jp%2Fjavascript%2Fope%2Fimg%2Fp15-0.png)