What will be logged when executing the statement console.log(typeof typeof 1);?

What will be logged when executing the statement console.log(typeof typeof 1);?

• A. "number"
• B. "string"
• C. "object"
• D. "undefined"

Answer: (B)

In JavaScript, the `typeof` operator is used to determine the type of a given variable or value. When you apply `typeof` to a value, it returns a string that reflects the type of that value. When executing the statement `typeof 1`, it evaluates to the string `"number"` because the value `1` is of type number. However, when you apply `typeof` again to the result of the first `typeof`, like in the statement `typeof typeof 1`, it looks like this: 1. The first `typeof 1` returns `"number"`. 2. The second `typeof` now operates on the string `"number"`. Since `"number"` is a string, evaluating `typeof "number"` results in `"string"`. Therefore, when the statement `console.log(typeof typeof 1);` is executed, it logs `B. "string"` to the console. This approach illustrates how the `typeof` operator works in a nested context, ultimately leading to the correct identification of the type of the result produced from the first `typeof` evaluation.

In JavaScript, the typeof operator is used to determine the type of a given variable or value. When you apply typeof to a value, it returns a string that reflects the type of that value.

When executing the statement typeof 1, it evaluates to the string "number" because the value 1 is of type number.

However, when you apply typeof again to the result of the first typeof, like in the statement typeof typeof 1, it looks like this:

1. The first typeof 1 returns "number".

2. The second typeof now operates on the string "number".

Since "number" is a string, evaluating typeof "number" results in "string".

Therefore, when the statement console.log(typeof typeof 1); is executed, it logs B. "string" to the console. This approach illustrates how the typeof operator works in a nested context, ultimately leading to the correct identification of the type of the result produced from the first typeof evaluation.