Exercise: JS Operators

Objective

Your objective is to practice using and reading operators and operation results between JavaScript values.

Steps

Exercise Repo: JavaScript Operators

Exercise 1

1. Declare 2 variables, a and b, and assign 20 to a and 4 to b
2. Declare a variable add that uses the + operator to store the result of adding the values stored in a and b
3. Declare a variable minus that uses the - operator to store the result of subtracting the values stored in a and b
4. Declare a variable multiply that uses the * operator to store the result of multiplying the values stored in a and b
5. Declare a variable dividing that uses the / operator to store the result of dividing the values stored in a and b

You can print the value of the variables to the browser console (ex: console.log(add)) to check the result.

Exercise 2

1. Use the following code to answer the questions below:

let num = 11;

let str = "11";

let str2 = "eleven";

let isPresent = true;

let firstName = "Frodo";

let lastName = "Baggins";

• What is the value of: num + str?
• What is the value of: num + str2?
• What is the value of: num + isPresent?
• What is the value of: firstName + num?
• What is the value of: isPresent + str?
• What is the value of: firstName + lastName?

Use the code above to test and print the results.

Exercise 3

1. Use the following code to answer the questions below:

let val = 5;

let str3 = "5";

let str4 = "five";

let isAwake = false;

• What is the value of: val == str3?
• What is the value of: val === str3?
• What is the value of: !isAwake?
• What is the value of: ("eleven" == str4 && val >= str3)?
• What is the value of: (!isAwake || isAwake)?
• What is the value of: 0 == false?
• What is the value of: 0 === false?
• What is the value of: 0 != false?
• What is the value of 0 !== false?

Use the code above to test and print the results.