174 lines
4.4 KiB
HTML
174 lines
4.4 KiB
HTML
<!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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* {
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margin: 0;
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padding: 0;
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}
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img {
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height: 80px;
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position: fixed;
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user-select: none;
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}
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body {
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height: 100vh;
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}
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.hidden {
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display: none !important;
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}
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.popup {
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position: fixed;
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width: 100%;
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height: 100%;
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background: rgb(0 0 0 / 57%);
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display: flex;
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align-items: center;
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justify-content: center;
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z-index: 99;
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}
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.popup .center {
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width: 400px;
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height: 250px;
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background: #fff;
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position: relative;
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}
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.popup .center .popup_title {
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display: flex;
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justify-content: center;
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height: 50px;
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align-items: center;
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border-bottom: 1px solid #eeecec;
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box-sizing: border-box;
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}
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.popup .center .popup_close {
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position: absolute;
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right: 15px;
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top: 5px;
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font-size: 24px;
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}
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.popup .center .popup_body {
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padding: 15px;
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display: flex;
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align-items: center;
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height: 200px;
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justify-content: center;
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box-sizing: border-box;
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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="popup hidden">
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<div class="center">
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<div class="popup_title">恭喜中奖</div>
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<div class="popup_close">x</div>
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<div class="popup_body">
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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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// 随机再屏幕上边生成红包，红包需要在屏幕外边（-自身高度）
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// 定义一个方法，让红包运动起来，定时器修改top距离
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// 给所有红包绑定点击事件，点击的时候暂停所有红包，然后显示弹窗，告知
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// 中奖的等级，然后关闭弹窗后删除你刚刚点击的红包，并让其他红包继续运动
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var clientWidth = $("body").clientWidth - 61,
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clientHeight = $("body").clientHeight + 80,
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createdId = null, currendHb = null;
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function createdHongBao() {
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var img = document.createElement("img");
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img.src = "./hb.png";
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img.style.top = "-80px"
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img.style.left = `${Math.random() * clientWidth}px`;
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img.onclick = () => {
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currendHb = img;
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// 停止当前网页上的所有红包
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_("img").forEach(v => clearInterval(v.IntervalId))
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// 停止不要再生成新的红包
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clearInterval(createdId)
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discount()
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$(".popup").classList.remove("hidden")
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}
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$("body").appendChild(img)
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motion(img)
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}
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function motion(el) {
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el.IntervalId = setInterval(() => {
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var top = parseInt(el.style.top) + 1;
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if (top > clientHeight) {
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clearInterval(el.IntervalId)
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$("body").removeChild(el)
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} else {
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el.style.top = `${top}px`
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}
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}, 6);
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}
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function discount () {
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var nums = Math.random();
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if (nums < 0.005) {
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$(".popup_body").innerText = `恭喜中得，1折！！`
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} else if (nums >= 0.005 & nums < 0.2){
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$(".popup_body").innerText = `恭喜中得，8折！！`
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} else if (nums >= 0.2){
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$(".popup_body").innerText = `恭喜中得，9折！！`
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}
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}
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$(".popup_close").onclick = () => {
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$(".popup").classList.add("hidden");
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// 删除你点击的那个红包
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$("body").removeChild(currendHb)
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// 获取网页上现在的红包，然后调用 motion 让他们重新运动起来
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_("img").forEach(v => motion(v))
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// 重新调用 auto 方法，让红包继续产生
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auto();
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}
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function auto() {
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createdId = setInterval(() => {
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createdHongBao()
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}, 500);
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}
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auto()
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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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</script>
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</html> |