分享一个日历时间tab切换的应用,先看下效果图:

上代码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>分享一个日历时间tab切换的应用 - Web前端之家https://www.jiangweishan.com</title>
<style type="text/css">
#app {
width: 400px;
height: 50px;
margin: 200px auto;
position: relative;
color: darkgray;
}
.title {
position: absolute;
top: -50px;
left: 0;
width: 200px;
height: 50px;
}
ul {
list-style: none;
background-color: blanchedalmond;
width: 100%;
display: block;
padding: 0;
}
ul li {
display: inline-block;
width: 50px;
height: 50px;
text-align: center;
line-height: 50px;
cursor: pointer;
}
.left {
position: absolute;
top: 0;
left: -50px;
font-size: 35px;
cursor: pointer;
}
.right {
position: absolute;
top: 0;
right: -50px;
font-size: 35px;
cursor: pointer;
}
.on {
color: darkorange;
}
</style>
</head>
<body>
<div id="app">
<div class="title"></div>
<div class="left"><</div>
<ul>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
</ul>
<div class="right">></div>
</div>
<script src="/demo/js/jq.js"></script>
<script>
let now = new Date()
let oneDay = 1000*60*60*24 // 一天的时间
let timeArr = [] // 用来存储每次循环真正时间戳的数组
let onDate = now.getTime() // 当前激活的日期(有且仅有一个)
init()
// 点击后添加激活样式
$('ul li').on('click', function() {
acton($(this).index())
})
$('.left').on('click', function() {
changeUl(0)
})
$('.right').on('click', function() {
changeUl(1)
})
function init() {
// 计算初始化时的周一和周天
let monday = now.getTime() - (now.getDay() - 1)*oneDay
let sunday = now.getTime() + (7 - now.getDay())*oneDay
// 循环渲染本周
for(let i = 0;i < 7;i++) {
let nowDate = monday + oneDay * i
$('ul li').eq(i).text(new Date(nowDate).getDate())
timeArr.push(nowDate)
if (nowDate === now.getTime()) { // 初始化时渲染标签并激活当前本地日期和显示
acton(i)
}
}
}
// 判断数组中是否存在该日期并激活
function judon() {
if (timeArr.indexOf(onDate) !== -1) {
$('ul li').eq(timeArr.indexOf(onDate)).addClass('on').siblings().removeClass('on')
} else {
$('ul li').each(function() {
$(this).removeClass('on')
})
}
}
// 点击前后实现更换每周内容,1是前进一周,0是后退一周
function changeUl(type) {
for (let n = 0;n < 7;n++) {
timeArr[n] = type ? timeArr[n] + oneDay*7 : timeArr[n] - oneDay*7
$('ul li').eq(n).text(new Date(timeArr[n]).getDate())
}
judon()
}
// 激活日期并显示
function acton(i) {
let nowTitle = new Date(timeArr[i]);
$('ul li').eq(i).addClass('on').siblings().removeClass('on');
$('.title').text(`${nowTitle.getFullYear()}年${nowTitle.getMonth()+1}月${nowTitle.getDate()}日`);
onDate = timeArr[i]
}
</script>
</body>
</html> 







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