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如何通過點擊開始按鈕來重新啓動遊戲，除了重新加載整個頁面？
問題發生的原因是當用戶點擊開始 playGame函數被調用，但playGame函數的前一個實例仍在運行。我甚至想過要殺掉以前的函數實例，但在JS中，除了使用webworker.terminate（）之外，它不能實現。
下面的代碼：用javascript重新啓動西蒙遊戲
document.addEventListener("DOMContentLoaded", function() {
'use strict';
var checkOn = document.querySelector("input[type=checkbox]");
var gameCount = document.getElementsByClassName("innerCount")[0];
var startButton = document.getElementById("innerStart");
var strictButton = document.getElementById("strictButton");
var strictInd = document.getElementById("strictIndicator");
var strictMode = false;
var soundArray = document.getElementsByTagName("audio");
var buttons = document.querySelectorAll(".bigButton");
var buttonArray = [].slice.call(buttons, 0);
checkOn.addEventListener("change", function() {
if (checkOn.checked) {
gameCount.innerHTML = "--";
} else {
gameCount.innerHTML = "";
}
});
strictButton.addEventListener("click", function() {
if (checkOn.checked) {
strictMode = !strictMode;
strictMode ? strictInd.style.backgroundColor = "#FF0000" :
strictInd.style.backgroundColor = "#850000";
}
});
function getRandArray() {
var array = [];
for (var i = 0; i < 22; i++) {
array[i] = Math.floor(Math.random() * 4);
}
return array;
}
startButton.addEventListener("click", function() {
if (checkOn.checked) {
var level = 0;
var randIndexArr = getRandArray();
sleep(700).then(function() {
playGame(randIndexArr, level);
});
}
});
function sleep(time) {
return new Promise(resolve => {
setTimeout(resolve, time)
})
}
function checkButton(randIndexArr, counter) {
var indexButton = 0;
var checker = function checker(e) {
var clickedButtonId = e.target.dataset.sound;
lightenButton(clickedButtonId);
if (+(clickedButtonId) === randIndexArr[indexButton]) {
if (indexButton === counter) {
counter++;
for (let i = 0; i < 4; i++) {
buttonArray[i].removeEventListener("click", checker, false)
}
sleep(2000).then(function() {
playGame(randIndexArr, counter);
});
}
indexButton++;
} else {
gameCount.innerHTML = "--";
if (strictMode) {
indexButton = 0;
counter = 0;
} else {
indexButton = 0;
}
for (let i = 0; i < 4; i++) {
buttonArray[i].removeEventListener("click", checker, false)
}
sleep(2000).then(function() {
playGame(randIndexArr, counter);
});
}
};
for (var i = 0; i < 4; i++) {
buttonArray[i].addEventListener("click", checker, false)
}
}
function playGame(randIndexArr, counter) {
if (counter === 22) {
return;
}
//Show the level of the Game
gameCount.innerHTML = counter + 1;
//Light and play user's input then check if input is correct
randIndexArr.slice(0, counter + 1).reduce(function(promise, div, index) {
return promise.then(function() {
lightenButton(div);
return new Promise(function(resolve, reject) {
setTimeout(function() {
resolve();
}, 1000);
})
})
}, Promise.resolve()).then(function() {
checkButton(randIndexArr, counter);
});
}
function lightenButton(id) {
var lightColorsArr = ["liteGreen", "liteRed", "liteYell", "liteBlue"];
soundArray[id].play();
buttonArray[id].classList.add(lightColorsArr[id]);
sleep(500).then(function() {
buttonArray[id].classList.remove(lightColorsArr[id])
});
}
});@font-face {
font-family: myDirector;
src: url('https://raw.githubusercontent.com/Y-Taras/FreeCodeCamp/master/Simon/fonts/myDirector-Bold.otf');
}
body {
background-color: #5f5f5f;
}
#outerCircle {
display: flex;
flex-wrap: wrap;
margin: 0 auto;
width: 560px;
border: 2px dotted grey;
position: relative;
box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}
.bigButton {
height: 250px;
width: 250px;
border: solid #464646;
transition: all 1s;
-webkit-transition: all 1s;
-moz-transition: all 1s;
-o-transition: background-color 0.5s ease;
}
#greenButton {
background-color: rgb(9, 174, 37);
border-radius: 100% 0 0 0;
border-width: 20px 10px 10px 20px;
}
.liteGreen#greenButton {
background-color: #86f999;
}
#redButton {
background-color: rgb(174, 9, 15);
border-radius: 0 100% 0 0;
border-width: 20px 20px 10px 10px;
}
.liteRed#redButton {
background-color: #f9868a;
}
#yellowButton {
background-color: rgb(174, 174, 9);
border-radius: 0 0 0 100%;
border-width: 10px 10px 20px 20px;
}
.liteYell#yellowButton {
background-color: #f9f986;
}
#blueButton {
background-color: rgb(9, 37, 174);
border-radius: 0 0 100% 0;
border-width: 10px 20px 20px 10px;
}
.liteBlue#blueButton {
background-color: #8699f9;
}
div#innerCircle {
border: 15px solid #464646;
border-radius: 50%;
position: absolute;
top: 25%;
right: 25%;
background-color: #c4c7ce;
}
div.additionalBorder {
margin: 4px;
border-radius: 50%;
height: 242px;
width: 242px;
overflow: hidden;
}
p#tradeMark {
margin: auto;
height: 104px;
text-align: center;
font-size: 68px;
font-family: myDirector;
color: #c4c7ce;
background-color: black;
border-color: antiquewhite;
line-height: 162px;
}
span#reg {
font-size: 12px;
}
.partition {
height: 6px;
}
.buttons {
height: 128px;
border-radius: 0 0 128px 128px;
border: 2px solid black;
}
/* Start and Strict buttons*/
table {
margin-left: 5px;
}
td {
text-align: center;
width: auto;
padding: 2px 10px;
vertical-align: bottom;
}
div.innerCount {
width: 54px;
height: 40px;
background-color: #34000e;
color: crimson;
border-radius: 11px;
font-size: 28px;
line-height: 42px;
text-align: center;
font-family: 'Segment7Standard', italic;
}
button#innerStart {
width: 27px;
height: 27px;
border: 4px solid #404241;
border-radius: 50%;
background: #a50005;
box-shadow: 0 0 3px gray;
cursor: pointer;
}
div.strict {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
}
button#strictButton {
width: 27px;
height: 27px;
border: 4px solid #404241;
border-radius: 50%;
background: yellow;
box-shadow: 0 0 3px gray;
cursor: pointer;
}
div#strictIndicator {
width: 6px;
height: 6px;
margin-bottom: 2px;
background-color: #850000;
border-radius: 50%;
border: 1px solid #5f5f5f;
}
#switcher {
display: flex;
justify-content: center;
align-items: center;
}
.labels {
font-family: 'Roboto', sans-serif;
margin: 4px;
}
/* toggle switch */
.checkbox > input[type=checkbox] {
visibility: hidden;
}
.checkbox {
display: inline-block;
position: relative;
width: 60px;
height: 30px;
border: 2px solid #424242;
}
.checkbox > label {
position: absolute;
width: 30px;
height: 26px;
top: 2px;
right: 2px;
background-color: #a50005;
cursor: pointer;
}
.checkbox > input[type=checkbox]:checked + label {
right: 28px;
}<div id="outerCircle">
<div class="bigButton" id="greenButton" data-sound="0">
<audio src="https://s3.amazonaws.com/freecodecamp/simonSound1.mp3"></audio>
</div>
<div class="bigButton" id="redButton" data-sound="1">
<audio src="https://s3.amazonaws.com/freecodecamp/simonSound2.mp3"></audio>
</div>
<div class="bigButton" id="yellowButton" data-sound="2">
<audio src="https://s3.amazonaws.com/freecodecamp/simonSound3.mp3"></audio>
</div>
<div class="bigButton" id="blueButton" data-sound="3">
<audio src="https://s3.amazonaws.com/freecodecamp/simonSound4.mp3"></audio>
</div>
<div id="innerCircle">
<div class="additionalBorder">
<p id="tradeMark">simon<span id="reg">®</span>
</p>
<div class="partition"></div>
<div class="buttons">
<table>
<tr class="firstRow">
<td>
<div class="innerCount"></div>
</td>
<td>
<button type="button" id="innerStart"></button>
</td>
<td>
<div class="strict">
<div id="strictIndicator"></div>
<button type="button" id="strictButton"></button>
</div>
</td>
</tr>
<tr class="labels">
<td>
<div id="countLabel">COUNT</div>
</td>
<td>
<div id="startLabel">START</div>
</td>
<td>
<div id="strictLabel">STRICT</div>
</td>
</tr>
</table>
<div id="switcher">
<span class="labels">ON</span>
<div class="checkbox">
<input id="checkMe" type="checkbox">
<label for="checkMe"></label>
</div>
<span class="labels">OFF</span>
</div>
</div>
</div>
</div>
</div>
設置一個跟蹤遊戲開/關狀態的模塊布爾變量（通過開/關按鈕的點擊事件設置）以及下一個按鈕序列生成的代碼段中，變量？ –
@ScottMarcus謝謝您使用您的建議，但在此之前，我必須更改代碼以創建一些私有變量的全局變量。 –