50 lines
1.3 KiB
JavaScript
50 lines
1.3 KiB
JavaScript
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// model
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var app = document.getElementById('app');
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var html = ' ';
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var lampArray = [];
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var lightOn;
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// view
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updateView();
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twentyFive();
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lightUpRandomLamp();
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function updateView() {
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app.innerHTML = html + `<button onclick="lightUpRandomLamp()">Light up random lamp</button>`;
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}
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// controller
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function twentyFive() {
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lampArray = [];
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let lamp = 0;
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for (i = 0; i < 25; i++) {
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html += /*HTML*/ `
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<div class="circles" id="${lamp}"></div>
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`;
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lampArray.push(lamp)
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lamp++;
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}
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updateView();
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}
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function lightUpRandomLamp() {
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checkForLightOn();
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let divToReplace = ' ';
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let selectedLampIndex = Math.floor(Math.random() * lampArray.length);
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divToReplace = document.getElementById(selectedLampIndex);
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let divToreplaceWith = document.getElementById(selectedLampIndex).classList = `circles lightOn`
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html = html.replace(divToReplace, divToreplaceWith);
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clearScreen();
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}
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function clearScreen() {
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html = '';
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}
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function checkForLightOn() {
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for (i = 0; i < lampArray.length; i++) {
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document.getElementById(i).classList.contains('circles')
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if (document.getElementById(i).classList.contains("lightOn")) {
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document.getElementById(i).classList = `circles`;
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}
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}
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}
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