Question 4

Correct answers: C, D

let n1 = "2048" * 1;
console.log(n1);         // 2048
console.log(typeof n1);  // number
 
let n2 = Number("2048");
console.log(n2);          // 2048
console.log(typeof n2);  // number
 
let n3 = "2048" + 0;
console.log(n3);         // 20480
console.log(typeof n3);  // string
 
let n4 = String(2048);
console.log(n4);         // 2048
console.log(typeof n4);  // string

A. The String() function converts the number 2048 to a string. This is the opposite operation of what the question is asking for, which is converting a string to a number.

B. The expression "2048" + 0 concatenates the string "2048" with the number 0, resulting in a string value. This does not convert the string to a number as requested in the question.

C. The Number() function explicitly converts the string "2048" to a number. This is a straightforward and recommended way to convert a string to a number in JavaScript.

D. The expression "2048" * 1 converts the string "2048" to a number by using the multiplication operator. This is a common way to convert a string to a number in JavaScript.