<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>随机点名</title>
</head>
<body>
<h1 class="name" id="names">点名</h1>
<input type="button" value="开始" id=start_btn>
<input type="button" value="结束" id=stop_btn disabled>
<script>"../DOM/tools.js"</script>
<script>
let arrName = ["肖巍", "杨恩", "小菊花", "二狗", "小强", "小湉湉", "弯弯姐", "陈锴", "徐阳", "陈阳吉", "张胜江", "我", "波哥", "阿汤哥", "杰哥", "薛老板"];
let names = document.querySelector("h1");
let start_btn = document.querySelector("#start_btn");
let stop_btn = document.querySelector("#stop_btn");
let i, timer;
function creatRandom(min, max) {
if (!max) {
[max, min] = [min, 0];
}
let number = parseInt(Math.random() * (max - min + 1) + min);
return number;
}
start_btn.onclick = function () {
stop_btn.disabled ? stop_btn.disabled = false : stop_btn.disabled = true;
start_btn.disabled ? start_btn.disabled = false : start_btn.disabled = true;
timer = setInterval(() => {
i = creatRandom(0, arrName.length - 1);
names.innerHTML = arrName[i];
}, 100);
};
stop_btn.onclick = function () {
stop_btn.disabled ? stop_btn.disabled = false : stop_btn.disabled = true;
start_btn.disabled ? start_btn.disabled = false : start_btn.disabled = true;
console.log(arrName [i]);
clearInterval(timer);
arrName.splice(i, 1);
if(!arrName.length){
start_btn.disabled=true;
stop_btn.disabled=true;
names.innerHTML = "抽奖完毕";
}
};
</script>
</body>
</html>
