原生js實現隨機點名
阿新 • • 發佈：2020-07-07
本文例項為大家分享了js實現隨機點名的具體程式碼，供大家參考，具體內容如下
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<title>隨機點名</title>
</head>
<body>
<h1 class="name" id="names">點名</h1>
<input type="button" value="開始" id=start_btn>
<input type="button" value="結束" id=stop_btn disabled>
<script>"../DOM/tools.js"</script>
<script>
let arrName = ["肖巍","楊恩","小菊花","二狗","小強","小湉湉","彎彎姐","陳鍇","徐陽","陳陽吉","張勝江","我","波哥","阿湯哥","傑哥","薛老闆"];
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 = "抽獎完畢";
}
};
</script>
</body>
</html>以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支援我們。