Add "Treasure Chest - Custom Events" project
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4 changed files with 142 additions and 0 deletions
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@ -15,6 +15,7 @@ func main() {
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mux.Handle("GET /treasure-chest-user-options/", http.StripPrefix("/treasure-chest-user-options", http.FileServer(http.Dir("treasure-chest-user-options"))))
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mux.Handle("GET /treasure-chest-js-class/", http.StripPrefix("/treasure-chest-js-class", http.FileServer(http.Dir("treasure-chest-js-class"))))
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mux.Handle("GET /treasure-chest-private/", http.StripPrefix("/treasure-chest-private", http.FileServer(http.Dir("treasure-chest-private"))))
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mux.Handle("GET /treasure-chest-custom-events/", http.StripPrefix("/treasure-chest-custom-events", http.FileServer(http.Dir("treasure-chest-custom-events"))))
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log.Println("Start the web server...")
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err := http.ListenAndServe(":8080", mux)
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10
structure-and-scale/treasure-chest-custom-events/README.md
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10
structure-and-scale/treasure-chest-custom-events/README.md
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@ -0,0 +1,10 @@
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# Treasure Chest Library - Chaining and Static Methods
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A library that pirates can use to track the amount of loot they find
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on their travels.
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The library willsupport chained methods and add static methods.
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# References
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* https://leanwebclub.com/learn/structure-and-scale/project-treasure-chest-library-chaining-and-static-methods/
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14
structure-and-scale/treasure-chest-custom-events/index.html
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14
structure-and-scale/treasure-chest-custom-events/index.html
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@ -0,0 +1,14 @@
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<!DOCTYPE html>
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<html lang="en" data-bs-theme="dark">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/water.css@2/out/water.css">
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<title>Treasure Chest - Private Class Custom Events</title>
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</head>
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<body>
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<h1>Treasure Chest - Custom Events</h1>
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<p>All of the magic here happens in the console.</p>
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<script src="script.js"></script>
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</body>
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</html>
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117
structure-and-scale/treasure-chest-custom-events/script.js
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117
structure-and-scale/treasure-chest-custom-events/script.js
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/**
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* Emit a custom event
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* @param {String} type The event type
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* @param {*} detail Any details to pass along with the event
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*/
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function emit (type, detail) {
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// Create a new event
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let event = new CustomEvent(type, {
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bubbles: true,
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cancelable: true,
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detail: detail
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});
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// Dispatch the event
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return document.dispatchEvent(event);
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}
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class TreasureChest {
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#gold;
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#silver;
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#bronze;
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constructor (initialLoot = {}) {
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// Merge options into defaults
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let {bronze, silver, gold} = Object.assign({
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bronze: 0,
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silver: 0,
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gold: 0,
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}, initialLoot);
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this.#bronze = bronze;
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this.#silver = silver;
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this.#gold = gold;
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}
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addGold (qty) {
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this.#gold += qty;
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emit('treasurechest:add', {type: 'gold', qty: qty});
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return this;
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}
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addSilver (qty) {
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this.#silver += qty;
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emit('treasurechest:add', {type: 'silver', qty: qty});
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return this;
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}
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addBronze (qty) {
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this.#bronze += qty;
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emit('treasurechest:add', {type: 'bronze', qty: qty});
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return this;
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}
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getBronze () {
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return this.#bronze;
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}
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getSilver () {
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return this.#silver;
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}
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getGold () {
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return this.#gold;
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}
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getLoot () {
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return `Gold: ${this.#gold}, Silver: ${this.#silver}, Bronze: ${this.#bronze}`;
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}
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/**
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* Randomly shuffle an array
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* https://stackoverflow.com/a/2450976/1293256
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* @param {Array} array The array to shuffle
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* @return {Array} The shuffled array
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*/
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static #shuffle (array) {
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let currentIndex = array.length;
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let temporaryValue, randomIndex;
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// While there remain elements to shuffle...
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while (0 !== currentIndex) {
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// Pick a remaining element...
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randomIndex = Math.floor(Math.random() * currentIndex);
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currentIndex -= 1;
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// And swap it with the current element.
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temporaryValue = array[currentIndex];
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array[currentIndex] = array[randomIndex];
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array[randomIndex] = temporaryValue;
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}
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return array;
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}
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static getRandomLoot () {
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let amount = [];
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for (let qty = 0; qty < 50; qty++) {
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amount.push(qty+1);
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}
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return {
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gold: this.#shuffle(amount)[0],
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silver: this.#shuffle(amount)[0],
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bronze: this.#shuffle(amount)[0],
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}
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}
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};
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