JavaScript - Statements practice with solutions included.

js-statements-practice.js

//########### Cool guy statements ##########

//1.Declare 2 variables named {num1} and {num2} that are of type number. (Give them numerical values).

var num1 = 2;
var num2 = 5;


//2.Add num1 and num2 and display the result in the console. store the sum in a new variable called num3;

console.log(num1 + num2);
var num3 = num1 + num2;


//3. take the num3 and multiply it by double num1. Divide the new result by num2; Log the result;
console.log((num3 * (num1 * 2)) / num2);

//4. Create 3 new variables called string1, string2 and string3 assign a string to each.
//give each variable a string value; Something like s1 = I, s2 = am, s3 = hackerman!

var string1, string2, string3;

string1 = "I ";
string2 = " am ";
string3 = " HACKERMAN!";

//5. Concatenate all three strings together and log it in the console.
console.log(string1 + string2 + string3);

//6. Store this new result in a statement;
var newString = string1 + string2 + string3;


//7. create a new number variable that stores a number. Concat the new number with the provided string below.

var myFavoriteNumber = 10;
var myString = "This is my new favorite number: ";

myString += myFavoriteNumber;

//8. Create a new statement that uses 4 variables displays a phone number in the proper format 123-456-7890;
//create the alternate versions as well 1-234-567-8901, (123)-456-7890

var firstNumGroup = 123;
var secondNumGroup = 456;
var thirdNumGroup = 7890;
var hyphon = "-";

console.log(firstNumGroup + hyphon + secondNumGroup + hyphon + thirdNumGroup);

//Assign this new phone number to a variable

//9. Write a statement that converts two negative numbers to positive numbers, add them together and then print the sum to the console.; research Math.abs. Math is fucking amazing;
console.log(Math.abs(-10) + Math.abs(-20));

//10. Create a variable that holds a number. Create a variable that holds a string. create a variable that holds a boolean (T/F).

//Write the following:
//console.log(typeof (numbervariable)); //"number"
//console.log(typeof (stringvariable)); // "string"
//console.log(typeof (booleanvariable)); // "boolean"


//concat the number variable to the string variable and store it in a new variable called concatStringNum;
//console.log(typeof (concatStringNum));
//what is the type?
//How would this be useful/terrible?
//HAIL THE DARK LORD!!!!