Question

What will the following code do when called?
var numberOfShoes = 3;
++numberOfShoes;

Answer 1

The given code declares a variable numberOfShoes with the value 3, then increments it by 1 using the pre-increment operator, resulting in a final value of 4.

Step-by-step explanation:

The code in question consists of a variable declaration and an increment operation in JavaScript. When this code is called, it will first declare a variable numberOfShoes and initialize it with the value 3. Subsequently, the increment operator (++), which is placed before the variable, will increase the value of numberOfShoes by 1. Therefore, after the execution of the code, the value of numberOfShoes will be 4. This is an example of a pre-increment operation where the value is incremented first and then used or returned.