194 lines
4.5 KiB
HTML
194 lines
4.5 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>红包雨</title>
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<style>
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body {
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margin: 0;
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padding: 0;
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width: 100%;
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height: 100vh;
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}
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img {
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width: 80px;
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height: 96px;
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position: fixed;
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top: -96px;
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}
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.dialog {
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position: fixed;
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width: 100%;
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height: 100%;
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background: #0000008c;
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z-index: 9999;
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display: none;
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}
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.center {
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width: 40%;
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background: #fff;
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padding: 15px 10px;
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border-radius: 4px;
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position: absolute;
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left: 50%;
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top: 50%;
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transform: translate(-50%, -50%);
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}
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.title {
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height: 40px;
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line-height: 40px;
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border-bottom: 1px solid #ebe9e9;
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}
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.content {
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padding: 20px 0;
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text-align: center;
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}
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.footer {
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display: flex;
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justify-content: flex-end;
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}
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.footer .ok {
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padding: 3px 15px;
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background: #2a6bf4;
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color: #fff;
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font-size: 13px;
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border-radius: 4px;
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cursor: pointer;
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}
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</style>
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</head>
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<body>
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<div class="dialog">
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<div class="center">
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<div class="title">提示</div>
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<div class="content"></div>
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<div class="footer">
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<div class="ok">确定</div>
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</div>
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</div>
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</div>
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</body>
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<script>
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// 1 随机创建 红包
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// 获取屏幕宽度（x）,减去 红包的宽度，高度-
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// 2 红包运动
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//
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// 3 点击开红包
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//
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var { clientWidth, clientHeight } = document.body;
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var createdNumber = null, clickImg = null, count = 0;
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// 创建红包
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function CreatedHb() {
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var img = document.createElement("img");
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var x = Math.random() * (clientWidth - 80)
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img.src = "./hb.png";
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img.move = 0;
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img.style.left = `${x}px`;
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img.onclick = () => {
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count += 1;
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if (count <= 3) {
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clickImg = img;
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clearInterval(createdNumber)
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_("img").forEach(v => {
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clearTimeout(v.time)
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})
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WinPrize();
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} else {
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$(".content").innerText = "三次抽奖已经用完"
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$(".dialog").style.display = "block"
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}
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}
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$("body").appendChild(img)
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motion(img, -96)
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}
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function WinPrize() {
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$(".dialog").style.display = "block"
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var num = Math.random();
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if (num > 0 && num <= 0.5) {
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$(".content").innerText = "恭喜您中了九折"
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} else if (num > 0.51 && num <= 0.995) {
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$(".content").innerText = "恭喜您中了八折"
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} else {
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$(".content").innerText = "恭喜您中了五折"
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}
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}
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// 关闭按钮
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$(".footer .ok").onclick = () => {
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$(".dialog").style.display = "none"
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$("body").removeChild(clickImg)
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clearTimeout(clickImg.time)
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_("img").forEach(v => {
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motion(v, -96)
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})
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auto();
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}
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function motion(el, top) {
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el.time = setTimeout(function fn() {
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el.move += 4;
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if (el.move > (clientHeight + 96)) {
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$("body").removeChild(el)
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clearTimeout(el.time)
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} else {
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el.style.top = `${top + el.move}px`
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el.time = setTimeout(fn, 1000 / 60)
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}
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}, 1000 / 60)
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}
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function $(className) {
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return document.querySelector(className)
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}
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function _(className) {
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return document.querySelectorAll(className)
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}
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function auto() {
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createdNumber = setInterval(() => {
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CreatedHb()
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}, 500)
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}
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auto()
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</script>
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</html>
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