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Commit Homework week 3
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‎Week3/homework/index.html‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title id="id_page_title"></title>
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<meta charset="utf-8" />
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<link rel="stylesheet" type="text/css" href="./main.css" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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</head>
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<body id="id_page_container">
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<p id="id_page_caption"
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class="cls_text_align_right cls_background_color_gold"
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style="padding:10px 20px">
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</p>
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<div class="cls_text_align_left cls_background_color_gold">
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Open the console to see the results
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</div>
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<script src="./main.js"></script>
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<script src="./js-exercises/ex01-compliment.js"></script>
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<script src="./js-exercises/ex02-dog-years.js"></script>
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<script src="./js-exercises/ex03-fortune-teller.js"></script>
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<script src="./js-exercises/ex04-shopping-cart.js"></script>
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<script src="./js-exercises/ex05-total-price.js"></script>
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<script src="./js-exercises/project-ccn-validate.js"></script>
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</body>
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</html>
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‎Week3/homework/js-exercises/ex01-compliment.js‎

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'use strict'
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/*
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description exercise with accessing a random array element
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*/
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function runExercise01 () {
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console.log("= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =");
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console.log("JS-1 - week 3 - Exercise 01 - Random compliment");
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console.log("Access random array element");
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console.log("- - - - - - - - - - - - - - - - - - - -");
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function getCompliment(myName){
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let listCompliments=[ 'Awesome', 'Magnificent', 'Amazing', 'Wondeful', 'Wondrous',
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'Mind-blowing', 'Jaw-dropping', 'Excellent', 'Marvelous', 'Impressive' ];
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return `Hey ${myName}, you are ${listCompliments[Math.floor(Math.random()*10)]}!`;
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}
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console.log(getCompliment("Manolis"));
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console.log(getCompliment("Manolis"));
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console.log(getCompliment("Manolis"));
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console.log("= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =");
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console.log(" ");
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};
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runExercise01();
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‎Week3/homework/js-exercises/ex02-dog-years.js‎

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'use strict'
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/*
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description exercise with calculating a number based on a rule
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*/
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function runExercise01 () {
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console.log("= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =");
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console.log("JS-1 - week 3 - Exercise 02 - Dog years");
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console.log("Calculate a number based on rules");
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console.log("- - - - - - - - - - - - - - - - - - - -");
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function calculateDogAge(dogName,isMale,yearBorn){
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let currentYear=(new Date()).getFullYear();
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// normalize dog's birthYear - allowed values from (currentYear-20) to currentYear
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yearBorn=(yearBorn<(currentYear-20)?currentYear-20:
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(yearBorn>currentYear?currentYear:yearBorn));
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let bornText=(yearBorn==currentYear?"this year":
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(yearBorn==(currentYear-1)?"last year":`in ${yearBorn}`));
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let yearText=(currentYear-yearBorn)==0?"a newborn pup":
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`approximately ${(currentYear-yearBorn)*7} dog years old!`;
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return `My dog ${dogName} was born ${bornText}, ${isMale?"he":"she"} is ${yearText}`;
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}
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console.log(calculateDogAge("Bleu",false,1915));
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console.log(calculateDogAge("Ruby",false,2020));
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console.log(calculateDogAge("Max",true,2019));
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console.log("= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =");
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console.log(" ");
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};
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runExercise01();
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‎Week3/homework/js-exercises/ex03-fortune-teller.js‎

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'use strict'
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/*
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description exercise with array parameters & rng
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*/
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function runExercise03 () {
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console.log("= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =");
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console.log("JS-1 - week 3 - Exercise 03 - Fortune teller");
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console.log("Array parameters & random element selection");
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console.log("- - - - - - - - - - - - - - - - - - - -");
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function tellFortune(listJobs,listCities,listSpouceNames,listChildren){
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function spliceRandomValue(anArray){
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return anArray.splice(Math.floor(Math.random()*anArray.length),1)};
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function addPrefix(paramValue){
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return ('aeioy'.indexOf(paramValue.toString()[0].toLowerCase())<0?"a ":"an ")+paramValue};
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let childNum=spliceRandomValue(listChildren);
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let childrenText=(childNum<1?"without children":"with "
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+(childNum==1?"one child":`${childNum} kids`));
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return `You will be ${addPrefix(spliceRandomValue(listJobs))}`
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+` living in ${spliceRandomValue(listCities)}`
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+`, married to ${addPrefix(spliceRandomValue(listJobs))}`
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+` named ${spliceRandomValue(listSpouceNames)} ${childrenText}.`;
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}
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let funnyJobsList=['Chocolate Beer Wrestler Administrator','Cat Editor Behavior Consultant'
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,'Unicorn Division Chief Farmer','Belly Dance Ninja Poet'
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,'Bride Kidnapping Master Carpenter','Web Snake Developer-Milker'
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,'Sub-Commitment Under-Secretary','Master Handshake Broker'
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,'Water Slide Toast Tester','Professional Sleeper Pilot'
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,'Inspiration Office Rider','Beverage Dissemination Officer Agent'
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,'Digital Prophet Boxer','Galactic Research Viceroy of Excellence'
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,'Space Travel Agent-Burglar','Chief Troublemaker Commando'
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,'In-house Zoologist-Philosopher','Shadow Accounting Dancer'
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,'Electrician-Gynecologist','Computer Speech Accountant'
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,'Occupational Hazard Engineer','Hunter-Seeker Epidemiologist'];
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let locationNames=['Dublin','Bruges','Porto','Berlin','Zagre','Marseille','Stockholm'
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,'Athens','Oslo','Bratislava','Frankfurt','Amsterdam'];
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let partnerNames=['Luisa','Gema','Sandra','Alba','Ariadne','Rosa'
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,'Rebeca','Sonia','Kate','Nastasje','Eva'];
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let numChildren=[0,1,2,3,0,1,2,3,0,1,2,1];
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for (let i=0; i<10; i++)
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{console.log(tellFortune(funnyJobsList,locationNames,partnerNames,numChildren))};
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console.log("= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =");
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console.log(" ");
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};
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runExercise03();
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‎Week3/homework/js-exercises/ex04-shopping-cart.js‎

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'use strict'
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/*
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description Exercise with array element adding & removing
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*/
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function runExercise04 () {
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console.log("= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =");
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console.log("JS-1 - week 3 - Exercise 04 - Supermarket Shopping Cart");
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console.log("Array element adding & removing");
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console.log("- - - - - - - - - - - - - - - - - - - -");
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function addToShoppingCart(itemList,itemAdded){
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let funcResult=`In the supermarket your cart contains [${itemList}]. `;
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if (itemList.indexOf(itemAdded)<0) {
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itemList.push(itemAdded);
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funcResult+=`You also added [${itemAdded}] but noticed you have 3 items `
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+`so you removed [${itemList.shift()}].`;
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} else {
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funcResult+=`You tried to add [${itemAdded}] but noticed you already had some.`;
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}
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return funcResult+` You ended up buying [${itemList}].`;
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}
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let myShoppingList=['milk','bananas'];
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console.log(addToShoppingCart(myShoppingList,'coffee'));
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console.log(addToShoppingCart(myShoppingList,'bread'));
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console.log(addToShoppingCart(myShoppingList,'coffee'));
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console.log(addToShoppingCart(myShoppingList,'honey'));
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console.log("= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =");
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console.log(" ");
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};
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runExercise04();
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‎Week3/homework/js-exercises/ex05-total-price.js‎

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'use strict'
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/*
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description exercise with aggregate (total sum calculation) of object property values
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*/
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function runExercise05 () {
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console.log("= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =");
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console.log("JS-1 - week 3 - Exercise 05 - Total cost of Party shopping - Print the receipt");
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console.log("Aggregate (total sum calculation) of object property values");
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console.log("- - - - - - - - - - - - - - - - - - - -");
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function printReceipt(itemList){
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function printReceiptLine(lineText){console.log(' '.repeat(20)+'|'+lineText+'|')};
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const receiptWidth=30;
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function formatLine(leftText,rightText,doCenter){
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let funcResult=` ${leftText+rightText} `;
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while (funcResult.length<receiptWidth){
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funcResult=(doCenter?' '+funcResult+' ':funcResult.substr(0,leftText.length+2)
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+' '+funcResult.substr(leftText.length+2));
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}
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return funcResult.substr(0,receiptWidth);
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}
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printReceiptLine('='.repeat(receiptWidth));
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printReceiptLine(formatLine('Cash Register Receipt','',true));
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printReceiptLine('='.repeat(receiptWidth));
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printReceiptLine(formatLine('Product','Price',false));
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printReceiptLine('-'.repeat(receiptWidth));
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let valueList=Object.values(itemList);
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let descrList=Object.keys(itemList);
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let totalSum=0;
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for (let i=0; i<valueList.length; i++) {
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printReceiptLine(formatLine(descrList[i],valueList[i],false));
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totalSum+=valueList[i];
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}
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printReceiptLine('-'.repeat(receiptWidth));
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printReceiptLine(formatLine('Total cost',(Math.round(totalSum*100)/100),false));
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printReceiptLine('='.repeat(receiptWidth));
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}
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let cartForParty={ beer:12.99, chips:5.45, tequila:32.12, crackers:3.63, soda:5.89 };
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console.log('For your party you filled a shopping cart with the following items:');
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console.log(cartForParty);
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console.log('And here is the bill you have to pay:');
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printReceipt(cartForParty);
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console.log("= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =");
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console.log(" ");
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};
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runExercise05();
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‎Week3/homework/js-exercises/project-ccn-validate.js‎

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'use strict'
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/*
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description PROJECT: Validate the number of a credit card based on specified ruleset
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*/
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function runProjectccNumberValidator() {
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console.log("= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =");
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console.log("JS-1 - week 3 - PROJECT: Credit card number Validation");
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console.log("Validate the number of a credit card based on specified ruleset");
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console.log("- - - - - - - - - - - - - - - - - - - -");
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//
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// define the Credit card number validation routine
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//
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function isValidccNumber(ccNumber){
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// transform to string and remove non-numeric characters
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let ccNumStr=String(ccNumber).replace(/[^0-9]/g,'');
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// put each character into an array element
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let ccDigits=ccNumStr.split('');
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// decide validity based on specified ruleset
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return (ccNumStr.length==16)
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&& (ccNumStr.replace((new RegExp(ccNumStr[0],'g')),'').length>0)
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&& ((ccNumStr[15]%2)==0)
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&& (ccDigits.reduce((a,b)=>Number(a)+Number(b))>16);
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}
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let ccNumberList=[ '9999777788880000','6666666666661666',' 1234 - 5678 - 9012 - 3456 ',
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'a92332119c011112','4444444444444444',
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'1111111111111110','6666666666666661',' 6543 - 2109 - 8765 - 4321 ' ];
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for (let i=0; i<ccNumberList.length; i++){
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console.log(`Based on the provided rulset, the Credit card number [${
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ccNumberList[i]}] ${(isValidccNumber(ccNumberList[i])?'IS':'is NOT')} valid.`);
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}
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console.log("= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =");
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console.log(" ");
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};
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runProjectccNumberValidator();
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‎Week3/homework/main.css‎

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body {
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background-color: silver;
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padding: 0px 15px;
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font-size: 150%;
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font-family: sans-serif;
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}
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.cls_text_align_left {
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text-align: left;
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}
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.cls_text_align_right {
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text-align: right;
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}
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.cls_text_align_center {
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text-align: center;
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}
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.cls_background_color_gold {
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background-color: gold;
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}
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div {
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padding:10px 20px;
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margin: 10px 20px
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}
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;
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‎Week3/homework/main.js‎

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const const_page_title="Homework: JS-1 - week 3";
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document.getElementById("id_page_title").innerHTML=
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document.getElementById("id_page_caption").innerHTML=
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const_page_title;
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