Question 2

Correct answer: C

let s1 = String(1024);
console.log(s1);         // 1024
console.log(typeof s1);  // string
 
let s2 = 1024 + "0";
console.log(s2);         // 10240
console.log(typeof s2);  // string
 
let s3 = Number(1024);
console.log(s3);         // 1024
console.log(typeof s3);  // number
 
// let s4 = NumberToString(1024);
// Uncaught ReferenceError: NumberToString is not defined

A. There is no built-in function called NumberToString() in JavaScript. Using this function will result in an error, as it is not a valid method for converting a number to a string. The correct method is to use the String() function for this conversion.

B. Adding a number to a string in JavaScript will result in concatenation, not conversion. In this case, the number 1024 will be concatenated with the string "0", resulting in "10240", not a proper conversion to a string.

C. Using the String() function is the correct way to convert a number to a string in JavaScript. This function explicitly converts the number 1024 to a string and stores it in the variable s.

D. Using the Number() function will not convert the number 1024 to a string; instead, it will keep it as a number type. This is not the correct approach for converting a number to a string in JavaScript.