<script type="text/javascript">
var stuArray = ["小方", "小田", "小明", "小红", "小吕", "小于", "小美", "小绿", "李华", "小李", "小胡",
"小夏", "小徐", "小小", "小吴", "小陈", "小狗", "小许", "小熊", "小新"];
var stuList = document.querySelector(".students").querySelector("ul");
var buttonList = document.querySelectorAll("button");
var demoList = document.querySelector(".demo").querySelectorAll("li");
for (var i = 0; i < stuArray.length; i++) {
var li = document.createElement("li");
stuList.appendChild(li);
li.innerHTML = stuArray[i];
li.style.cssFloat = "left";
li.style.width = 200 + "px";
li.style.height = 60 + "px";
li.style.backgroundColor = "#4caf5085";
li.style.color = "#fff";
li.style.lineHeight = 60 + "px";
}
var stuArrayList = stuList.querySelectorAll("li");
function chooseOne () {
for (var i = 0; i < stuArrayList.length; i++) {
stuArrayList[i].style.background = "#4caf5085";
}
for (var i = 0; i < demoList.length; i++) {
demoList[i].innerHTML = "";
}
var interId = setInterval(function () {
var x = Math.floor(Math.random() * stuArray.length);
stuArrayList[x].style.backgroundColor = "green";
demoList[1].innerHTML = stuArrayList[x].innerHTML;
var timeId = setTimeout(function () {
stuArrayList[x].style.backgroundColor = "#4caf5085";
}, 100);
var y = Math.floor(Math.random() * stuArray.length);
if (y == x) {
clearTimeout(timeId);
clearInterval(interId);
stuArrayList[y].style.backgroundColor = "green";
}
}, 100);
}
function chooseTwo () {
for (var i = 0; i < stuArrayList.length; i++) {
stuArrayList[i].style.background = "#4caf5085";
}
for (var i = 0; i < demoList.length; i++) {
demoList[i].innerHTML = "";
}
var interId = setInterval(function () {
do {
var x1 = Math.floor(Math.random() * stuArray.length);
var x2 = Math.floor(Math.random() * stuArray.length);
} while (x1 == x2);
stuArrayList[x1].style.backgroundColor = "green";
stuArrayList[x2].style.backgroundColor = "green";
demoList[0].innerHTML = stuArrayList[x1].innerHTML;
demoList[2].innerHTML = stuArrayList[x2].innerHTML;
var timeId = setTimeout(function () {
stuArrayList[x1].style.backgroundColor = "#4caf5085";
stuArrayList[x2].style.backgroundColor = "#4caf5085";
}, 100);
var y1 = Math.floor(Math.random() * stuArray.length);
var y2 = Math.floor(Math.random() * stuArray.length);
if ((y1 == x1 && y2 == x2) || (y1 == x2 && y2 == x1)) {
clearTimeout(timeId);
clearInterval(interId);
stuArrayList[x1].style.backgroundColor = "green";
stuArrayList[x2].style.backgroundColor = "green";
}
}, 100);
}
function chooseThree () {
for (var i = 0; i < stuArrayList.length; i++) {
stuArrayList[i].style.background = "#4caf5085";
}
for (var i = 0; i < demoList.length; i++) {
demoList[i].innerHTML = "";
}
var interId = setInterval(function () {
do {
var x1 = Math.floor(Math.random() * stuArray.length);
var x2 = Math.floor(Math.random() * stuArray.length);
var x3 = Math.floor(Math.random() * stuArray.length);
} while (x1 == x2 || x2 == x3 || x1 == x3);
stuArrayList[x1].style.backgroundColor = "green";
stuArrayList[x2].style.backgroundColor = "green";
stuArrayList[x3].style.backgroundColor = "green";
demoList[0].innerHTML = stuArrayList[x1].innerHTML;
demoList[1].innerHTML = stuArrayList[x2].innerHTML;
demoList[2].innerHTML = stuArrayList[x3].innerHTML;
var timeId = setTimeout(function () {
stuArrayList[x1].style.backgroundColor = "#4caf5085";
stuArrayList[x2].style.backgroundColor = "#4caf5085";
stuArrayList[x3].style.backgroundColor = "#4caf5085";
}, 100);
var y1 = Math.floor(Math.random() * stuArray.length);
var y2 = Math.floor(Math.random() * stuArray.length);
var y3 = Math.floor(Math.random() * stuArray.length);
if ((x1 == y1 && x2 == y2) || (x1 == y2 && x2 == y1)) {
clearTimeout(timeId);
clearInterval(interId);
stuArrayList[x1].style.backgroundColor = "green";
stuArrayList[x2].style.backgroundColor = "green";
stuArrayList[x3].style.backgroundColor = "green";
}
}, 100);
}
buttonList[0].addEventListener("click", function () {chooseOne()}, false);
buttonList[1].addEventListener("click", function () {chooseTwo()}, false);
buttonList[2].addEventListener("click", function () {chooseThree()}, false);
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