Exercise – Variables & Data Types

by phate101101

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 _myString;
var _myNumber;
var _myBoolean;

// 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 _expr = ((5 + 3000) / 1.4) * 1.29e3;
console.log(_expr);

// 3)
// Combine at least three strings together
// Log the result to the console
var _3Strings = "first " + "second " + 3;
console.log(_3Strings);

// 4)
// Create an array with at least 5 values stored inside
// Log the result to the console
var _myArr = [_expr, _3Strings,_myString, 1.222, false ];
console.log(_myArr);

// 5)
// Use Array.prototype.concat to add another array to your original array
//  var arr3 = arr1.concat(arr2);
// Log the result to the console

var _myNextArr = ["Hello: "];
    _myNextArr =   _myArr.concat(_myNextArr);
console.log(_myNextArr);

// 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 Person = {};
	Person.name = "Edward Malone";
	Person.age = 27;
	Person.role = "CCE";
	Person.Colours = ["red", "purple"];
	console.log(Person);
	console.log(Person.name);
	Person.name = "Who am I";
	console.log(Person.name);

// 7) Bonus
// Add a function (method) to the previous object you created to allow it to "speak" to the...