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"use strict";
// OBJECTIVE ////////////////////////////////////////////////////////////////////////////////////////////////
//    Study Loops, how they work, what use cases do they have, etc.
// SUMMARY //////////////////////////////////////////////////////////////////////////////////////////////////
// What is the problem?:  
//    Study loops
// What is the BEST solution? 
//     Find the most efficient way to use a loop.
// What are the special components of these solutions?:  
//     1. "for" statment -- meant to iterate while incrementing or decrementing.
//             example: [counts up] 
//                           for (let i=0; i <= countTo; i++) {code looped through}
//             example: [counts down] 
//                           for (let i = countFrom; i >= 0; i-- ) {code looped through}
//     2. "for... of" -- creates a loop through iterable objects like arrays, maps, etc.
//     3. "for... in" -- meant to enumerate through object properties.
// What needs work?
//     1. Add more loop examples (i.e for...in, etc.) from research.
//     2. Add use case scenarios.
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
///// STANDARD FOR LOOP UP (INCREMENTING) //////////////////////////////////////////////
function countUp() {
    const countTo = 10;
    for (let i=0; i <= countTo; i++) {
        console.log(i);
console.log("FOR loop incrementing UP")
console.log(countUp());
///// STANDARD FOR LOOP DOWN (DECREMENTING) //////////////////////////////////////////////
function countDown() {
    const countFrom = 10;
    for (let i = countFrom; i >= 0; i-- ) {
        console.log(i);
console.log("FOR loop decrementing DOWN")
console.log(countDown());
///// LOOP USING THE forEach() METHOD ////////////////////////////////////////////////////
function arrayLoop () {
    const myArray = ["Tom", "Dick", "Harry"];
    return myArray.forEach((element, index) => console.log(`the element ${index} is ${element}`));
console.log("FOR Loop iterating through an array");
console.log(arrayLoop());
///// FOR...IN... LOOPING THROUGH AN OBJECT ///////////////////////////////////////////////////////////
const myObject = {
    fruit: "apple",
    drink: "water",
    desert: "cookie",
for (let key in myObject) {
    console.log(`the key ${key} is ${myObject[key]}`);
var object = { "key1" : "one", "key2" : "two", "key3" : "three" },
    key = "";
for (key in object) {
    console.log(key);             // "key1", "key2", "key3"
    console.log( object[key] );   // "one", "two", "three"
///// LOOPING THROUGH AN OBJECT USING OBJECT.KEYS ////////////////////////////////////////////////////
const mySecondObject = {
    hat: "baseball cap",
    shirt: "long sleeves",
    pants: "jeans",
Object.keys(mySecondObject)
// for (let{variable of declaration} character{temporary variable that is redeclared EVERY time through the loop} of string{iterable object we want to iterate through})
// so we'll iterate through every character of string one by one and set each character equal to the temporary variable "character".
// we then take that character and add it on to the start of the string reversed 
// then after the entire for loop, we return reversed
function tester(string) {
    let reversed = '';                   // string that will be assembled over time
    for (let character of string) {      
        reversed = character + reversed;
    return reversed;
console.log(tester('this is a test'));
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