Files
ClassContent/历届学生/front-end-team-10/项目练习/学生项目/冯凯/练习/js练习/红包.html
2024-09-27 02:06:13 +08:00

176 lines
3.9 KiB
HTML

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
img {
width: 70px;
height: 90px;
position: fixed;
}
body {
height: 100vh;
}
.alert {
width: 100%;
height: 100%;
position: fixed;
z-index: 999;
display: none;
}
.zz {
width: 100%;
height: 100%;
background: #000000a8;
position: fixed;
z-index: 1;
}
.text {
width: 300px;
height: 250px;
background: #fff;
position: fixed;
z-index: 2;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
border-radius: 10px;
padding: 11px;
box-sizing: border-box;
display: flex;
flex-direction: column;
}
.text .title {
height: 40px;
display: flex;
align-items: center;
border-bottom: 1px solid #d5d5d5;
}
.text .close {
position: absolute;
right: 10px;
top: 4px;
font-size: 20px;
cursor: pointer;
user-select: none;
}
.text .content {
flex: 1;
display: flex;
align-items: center;
justify-content: center;
font-size: 13px;
}
</style>
</head>
<body>
<div class="alert">
<div class="zz"></div>
<div class="text">
<div class="close"> x </div>
<div class="title">恭喜中奖</div>
<div class="content"></div>
</div>
</div>
</body>
<script>
var { clientWidth, clientHeight } = document.body;
var offsetLeft = clientWidth - 70, gId = null, gImg = null;
function createdHB() {
var randomLeft = Math.random() * offsetLeft;
var img = document.createElement("img");
img.src = "./hb.png";
img.onclick = () => {
gImg = img;
probability()
$(".alert").style.display = "block"
_("img").forEach(v => clearInterval(v.intervalId))
clearInterval(gId)
}
img.style = `
left: ${randomLeft}px;
top: -90px;
`;
$("body").appendChild(img)
sport(img)
}
function sport(img) {
img.intervalId = setInterval(() => {
var oldTop = Number(img.style.top.replace("px", ""));
var newTop = oldTop + 1
img.style.top = `${newTop}px`
if (newTop > clientHeight) {
$("body").removeChild(img);
clearInterval(img.intervalId)
}
}, 10);
}
$(".text .close").onclick = () => {
$(".alert").style.display = "none"
$("body").removeChild(gImg);
_("img").forEach(v => sport(v))
auto()
}
function auto() {
gId = setInterval(() => {
createdHB()
}, 500)
}
function probability() {
var probabilityNums = Number((Math.random() * 10).toFixed(4))
if (probabilityNums < 0.0002) {
$(".content").innerText = "恭喜中得一等奖!"
} else if (probabilityNums > 0.0001 && probabilityNums < 8) {
$(".content").innerText = "恭喜中得三等奖!"
} else {
$(".content").innerText = "恭喜中得二等奖!"
}
}
auto()
function $(className) {
return document.querySelector(className)
}
function _(className) {
return document.querySelectorAll(className)
}
</script>
</html>