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JS+CSS3实现时钟效果(抖音)

JS+CSS3实现时钟效果(抖音)

js+css3实现时钟效果(抖音)

本文讲述了抖音上很火的时钟效果是怎么实现的,主要用到原生态的 JS+CSS3,希望大家可以交流学习一下。

具体不解释了,看注释:

nbsp;html&gt;    <meta>    <title>Title</title>    <style> html{background: #000;color: #666;font-size: 12px;overflow:hidden; } *{margin: 0;padding: 0; } span{display: block;float: left; } .on{color: #fff; } .wrapper{width: 200px;height: 200px;position: absolute;left:50%;top:50%;margin-top: -100px;margin-left: -100px; } .wrapper .timebox{position: absolute;width: 200px;height: 200px;top: 0;left:0;border-radius: 100%;transition: all 0.5s; } .timebox span{transition: all 0.5s;float: left; } .wrapper .timebox span{position: absolute;left:50%;top:50%;width: 40px;height: 18px;margin-top: -9px;margin-left: -20px;text-align: right; } </style><p>    </p><p></p>    <p></p>    <p></p>    <p></p>    <p></p><script> let wrapper = document.getElementById("wrapper"); let yueBox = document.getElementById("yueBox"); let riqiBox = document.getElementById("riqiBox"); let hourbox = document.getElementById("hourbox"); let minutebox = document.getElementById("minutebox"); let secondbox = document.getElementById("secondbox"); /* * 找所有的东西标签函数 * */ let findSiblings = function( tag ){ let parent = tag.parentNode; let childs = parent.children; let sb = []; for(let i=0 ; i <= childs.length-1 ; i++){if( childs[i]!==tag){ sb[sb.length] = childs[i];} } return sb ; }; /* * 去掉所有兄弟的类 * */ let removeSiblingClass =function( tag ){ let sb = findSiblings( tag ); for(let i=0 ; i <= sb.length-1 ; i++){sb[i].className = ""; } }; /* * 初始化月份函数 * */ let initMonth = function(){for(let i=1; i<=12; i++){let span = document.createElement("span");span.innerHTML = i+"月";yueBox.appendChild( span );} }; // 初始化日期 let initDate = function(){ for(let i=1; i<=31; i++){let span = document.createElement("span");span.innerHTML = i+"日";riqiBox.appendChild( span ); } }; // 初始化小时,分钟,秒 let initHour = function(){ for(let i=0; i<=23; i++){let h = i ;let span = document.createElement("span");if( h<10){ h="0"+h;}span.innerHTML = h +"点";hourbox.appendChild( span ); } }; let initMinute = function(){ for(let i=0; i<=59; i++){let f = i ;let span = document.createElement("span");if( f<10){ f="0"+f;}span.innerHTML = f +"分";minutebox.appendChild( span ); } }; let initSecond = function(){ for(let i=0; i<=59; i++){let miao = i ;let span = document.createElement("span");if( miao<10){ miao="0"+miao;}span.innerHTML = miao +"秒";secondbox.appendChild( span ); } }; // 时间文字样式切换函数 let changeTime = function(tag){ tag.className = "on"; removeSiblingClass( tag ); }; /* * 初始化日历函数 * */ let initRili = function(){ initMonth(); // 初始化月份 initDate(); // 初始化日期 initHour(); // 小时 initMinute(); initSecond(); }; /* * 展示当前时间 * 参数:mydate 时间对象 * */ let showNow = function( mydate ){ let yue = mydate.getMonth() ; let riqi = mydate.getDate(); let hour = mydate.getHours() ; let minute = mydate.getMinutes(); let second = mydate.getSeconds(); // 时间文字样式切换函数 changeTime( yueBox.children[yue] ); changeTime( riqiBox.children[riqi-1] ); changeTime( hourbox.children[hour] ); changeTime( minutebox.children[minute] ); changeTime( secondbox.children[second] ); }; // 展示时间圆圈函数 // tag:目标 // num:数字数量 // dis:圆圈半径 let textRound = function(tag,num,dis){ let span = tag.children ; for(let i=0 ; i<=span.length-1; i++){span[i].style.transform="rotate("+ (360/span.length)*i+"deg) translateX("+dis+"px)" ; } }; /* * 旋转指定“圆圈”指定度数 * */ let rotateTag = function(tag , deg){ tag.style.transform = "rotate("+deg+"deg)"; }; let main = function(){ initRili(); // 初始化日历 setInterval(function(){let mydate = new Date();showNow( mydate ); // 展示当前时间 },1000); // n秒后,摆出圆形 setTimeout(function(){wrapper.className = "wrapper";textRound(yueBox,12,40);textRound(riqiBox,31,80);textRound(hourbox,24,120);textRound(minutebox,60,160);textRound(secondbox,60,200);setInterval(function(){ let mydate = new Date(); rotateTag( yueBox , -30*mydate.getMonth()); rotateTag( riqiBox , -360/31*(mydate.getDate()-1) ); rotateTag( hourbox , -360/24*mydate.getHours()); rotateTag( minutebox , -6*mydate.getMinutes()); rotateTag( secondbox , -6*mydate.getSeconds());},1000) },6000) }; main(); </script>

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感谢大家的阅读,大家学会了吗?

本文转自:blog.csdn.net/weixin_42703239/article/details/105012665

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