Exercise – Variables & Data Types

by iamKrickE

JavaScript

/**
 * Exercise:
 * Get to know your data types and variables
 *
 * Follow the directions below but feel free to experiment and veer off course.
 * Work in the console directly OR use "console.log()" to output to the console from the script.
 */

// 1)
// Declare 2 to 5 variables (name them as you like)
// Make at least one string, one number and one boolean. 
// Log the typeof each to the console

var oneString = 'derp',
    oneNumber = 27,
    oneBoolean = true;

console.log(oneString, oneNumber, oneBoolean);
// 2)
// Declare a new variable that stores the result of a mathematical expression
// You can add/multiply/divide/modulo any set of numbers 
// Log the result to the console

var doMath = oneNumber + 10;

console.log(doMath);

// 3)
// Combine at least three strings together
// Log the result to the console

var comboString = oneString + " Herpa derp";
console.log(comboString);
// 4)
// Create an array with at least 5 values stored inside
// Log the result to the console
var anArray = [1, 2, 3, 4, 5];
console.log(anArray);
// 5)
// Use Array.prototype.concat to add another array to your original array
// e.g. var arr3 = arr1.concat(arr2);
// Log the result to the console
var anotherArray = [6, 7, 8, 9, 10];
var comboArray = anArray.concat(anotherArray);
console.log(comboArray);
// 6) 
// Create an object literal that represents a person (perhaps you!)
// Define several properties within the object (name, hairColor, age, etc..)
// Define a property that stores an array ("siblings" or "favoriteColors")
// Log the object to the console
// Then Log ONLY the "name" property to the console
// Then Change the "name" property to something else, then log the object to the console
var perhapsYou = {
    name : "john",
    hair : "black",
    age : 35,
    siblings : ["todd", "JL"]
}
console.log(perhapsYou);
console.log(perhapsYou.name);
perhapsYou.name = "jaaahn";
console.log(perhapsYou.name);

// 7) Bonus
// Add a function (method) to the previous object you...