JavaScript typeof Interview Question
Many beginners get confused because typeof "Hello" prints string without quotes.
But remember, typeof always returns a string value.
The console simply hides the quotation marks when displaying strings.
console.log(typeof "Hello"); // string
console.log(typeof 100); // number
console.log(typeof true); // boolean
console.log(typeof undefined); // undefined
The typeof operator tells us the data type of a value.
typeof "Hello" returns "string".
typeof 100 returns "number".
typeof true returns "boolean".
typeof undefined returns "undefined".
But here's the JavaScript interview question:
console.log(typeof null);
The output is "object".
This is actually a historical bug in JavaScript that has been kept for backward compatibility.
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