js+css3實現簡單時鐘特效
阿新 • • 發佈：2020-09-14
本文例項為大家分享了js+css3實現簡單時鐘的具體程式碼，供大家參考，具體內容如下
1.實現了時鐘的特效，可以轉動，時間準確，畫面美觀大氣；
2.用到了css3的transform: rotate，transform-origin:,偽元素，border-radius，定位，z-index等等
效果如圖：
程式碼如下：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>CSS3時鐘特效</title>
<link rel="shortcut icon" type="image/x-icon" href="img/an.ico" />
<style>
/*錶盤邊框*/
.clock {
/* 設定大小 */
width: 400px;
height: 400px;
position: relative;
margin: 40px auto;
/*上邊距*/
border-radius: 50%;
/*圓形*/
box-shadow: 5px 5px 20px rgba(0,0.5);
/*錶盤陰影*/
background: #F5DEB3;
border: 10px solid #FFFF00;
}
/*畫刻度的面板*/
.box {
width: 100%;
height: 100%;
position: absolute;
top: 0;
left: 0;
}
/*用來裝刻度和數字的div*/
.box div {
width: 0px;
height: 200px;
position: absolute;
left: 200px;
/*旋轉*/
transform: rotate(0deg);
/*設定基點為右下角*/
transform-origin: bottom right;
background: rgba(255,0.5);
}
/*數字*/
.box div i {
float: left;
margin-top: 20px;
margin-left: -10px;
font-style: normal;
width: 20px;
text-align: center;
font-style: 18px;
}
/*小刻度*/
.box div::after {
content: "";
position: absolute;
background: #484848;
width: 2px;
height: 10px;
left: -1px;
}
/*大刻度*/
.box div.five::after {
position: absolute;
content: "";
width: 4px;
height: 20px;
left: -2px;
top: 0;
background: #484848;
border-radius: 0 0 2px 2px;
}
/*秒針樣式*/
.second {
width: 1px;
height: 200px;
background: red;
position: absolute;
left: 200px;
/*距離錶盤寬度一半*/
margin-top: 30px;
z-index: 10;
transform: rotate(0deg);
transform-origin: center 170px;
/*定位旋轉位置*/
}
/*圓心樣式*/
.second::after {
content: "";
position: absolute;
width: 20px;
height: 20px;
background: red;
border-radius: 50%;
bottom: 20px;
left: -10px;
}
/*分針樣式*/
.minute {
width: 2px;
height: 140px;
background: #8b8b8d;
position: absolute;
left: 199px;
margin-top: 60px;
z-index: 9;
transform-origin: center bottom;
transform: rotate(12deg);
animation: minute 60s linear infinite;
}
/*時針樣式*/
.hour {
width: 6px;
height: 100px;
background: #333;
position: absolute;
left: 197px;
margin-top: 100px;
z-index: 8;
border-radius: 3px;
transform: rotate(2deg);
transform-origin: center bottom;
animation: minute 60s linear infinite;
}
</style>
</head>
<body>
<div class="clock">
<div class="box"></div>
<div class="second"></div>
<div class="minute"></div>
<div class="hour"></div>
</div>
<script>
var box = document.getElementsByClassName("box")[0];
var ssObj = document.getElementsByClassName("second")[0];
var mmObj = document.getElementsByClassName("minute")[0];
var hhObj = document.getElementsByClassName("hour")[0];
/*獲取當前時間*/
var date = new Date();
var hh = date.getHours();
var mm = date.getMinutes();
var ss = date.getSeconds();
/*計算頁面指標載入時的角度*/
hhDeg = 360 * (hh % 12) / 12;
mmDeg = 360 * mm / 60;
ssDeg = 360 * ss / 60;
hhObj.style.transform = "rotate(" + hhDeg + "deg)";
mmObj.style.transform = "rotate(" + mmDeg + "deg)";
ssObj.style.transform = "rotate(" + ssDeg + "deg)";
// 定義初始刻度的度數
var Deg = 0;
/*畫刻度*/
for (var i = 0; i < 60; i++) {
var div1 = document.createElement("div"); //建立一個div
var hourNum = i / 5;
//當為5時
if (hourNum == 0) hourNum = 12;
if (i % 5 == 0) { //大刻度
div1.className = "five";
div1.innerHTML = "<i>" + hourNum + "</i>"
}
div1.style.transform = "rotate(" + Deg + "deg)";
box.appendChild(div1);
Deg += 6;// 每兩個刻度之間是6度
}
/*指標轉動的函式*/
function drawSS() {
// 秒針的度數
ssDeg = 360 * ss / 60;
// 分針的度數
mmDeg1 = 360 * mm / 60;
// 時針的度數
hhDeg1 = 360 * (hh % 12) / 12;
// 分針每秒走的位置
mmDeg = mmDeg1 + (6 * ss / 60);
// 時針每分鐘走的位置
hhDeg = hhDeg1 + (30 * mm / 60);
hhObj.style.transform = "rotate(" + hhDeg + "deg)";
mmObj.style.transform = "rotate(" + mmDeg + "deg)";
ssObj.style.transform = "rotate(" + ssDeg + "deg)";
ss += 1;
if (ss > 60) {
ss = 1;
mm += 1;
}
if (mm == 60) {
mm = 0;
hh += 1;
}
setTimeout(function() {
drawSS();
},1000);
}
drawSS();
</script>
</body>
</html>精簡版：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>CSS3時鐘特效</title>
<link rel="shortcut icon" type="image/x-icon" href="img/an.ico" />
<style>
/*錶盤邊框*/
.clock {
/* 設定大小 */
width: 400px;
height: 400px;
position: relative;
margin: 40px auto;
/*上邊距*/
border-radius: 50%;
/*圓形*/
box-shadow: 5px 5px 20px rgba(0,0.5);
/*錶盤陰影*/
background: #F5DEB3;
border: 10px solid #FFFF00;
}
/*畫刻度的面板*/
.box {
width: 100%;
height: 100%;
position: absolute;
top: 0;
left: 0;
}
/*用來裝刻度的div*/
.box div {
width: 0px;
height: 200px;
position: absolute;
left: 200px;
/*旋轉*/
transform: rotate(0deg);
/*設定基點為右下角*/
transform-origin: bottom right;
background: rgba(255,0.5);
}
/*小刻度*/
.box div:after {
content: "";
position: absolute;
background: #484848;
width: 2px;
height: 10px;
left: -1px;
}
/*大刻度*/
.box div.five:after {
position: absolute;
content: "";
width: 4px;
height: 20px;
left: -2px;
top: 0;
background: #484848;
border-radius: 0 0 2px 2px;
}
/*秒針樣式*/
.second {
width: 1px;
height: 200px;
background: red;
position: absolute;
left: 200px;
/*距離錶盤寬度一半*/
margin-top: 30px;
z-index: 10;
transform: rotate(0deg);
transform-origin: center 170px;
/*定位旋轉位置*/
}
/*圓心樣式*/
.second:after {
content: "";
position: absolute;
width: 20px;
height: 20px;
background: red;
border-radius: 50%;
bottom: 20px;
left: -10px;
}
/*分針樣式*/
.minute {
width: 2px;
height: 140px;
background: #8b8b8d;
position: absolute;
left: 199px;
margin-top: 60px;
z-index: 9;
transform-origin: center bottom;
transform: rotate(12deg);
}
/*時針樣式*/
.hour {
width: 6px;
height: 100px;
background: #333;
position: absolute;
left: 197px;
margin-top: 100px;
z-index: 8;
border-radius: 3px;
transform: rotate(2deg);
transform-origin: center bottom;
}
</style>
</head>
<body>
<div class="clock">
<div class="box"></div>
<div class="second"></div>
<div class="minute"></div>
<div class="hour"></div>
</div>
<script>
var box = document.getElementsByClassName("box")[0];
var ssObj = document.getElementsByClassName("second")[0];
var mmObj = document.getElementsByClassName("minute")[0];
var hhObj = document.getElementsByClassName("hour")[0];
/*獲取當前時間*/
var date = new Date();
var hh = date.getHours();
var mm = date.getMinutes();
var ss = date.getSeconds();
/*計算頁面指標載入時的角度*/
drawSS();
// 定義初始刻度的度數
var Deg = 0;
/*畫刻度*/
for (var i = 0; i < 60; i++) {
var div1 = document.createElement("div"); //建立一個div
//當為5時
if (i % 5 == 0) { //大刻度
div1.className = "five";
}
div1.style.transform = "rotate(" + Deg + "deg)";
box.appendChild(div1);
Deg += 6;// 每兩個刻度之間是6度
}
/*指標轉動的函式*/
function drawSS() {
// 秒針的度數
ssDeg = 360 * ss / 60;
// 分針的度數
mmDeg = 360 * mm / 60 + (6 * ss / 60);
// 時針的度數
hhDeg = 360 * (hh % 12) / 12 + (30 * mm / 60);
// 旋轉
hhObj.style.transform = "rotate(" + hhDeg + "deg)";
mmObj.style.transform = "rotate(" + mmDeg + "deg)";
ssObj.style.transform = "rotate(" + ssDeg + "deg)";
ss += 1;
// 每秒鐘呼叫一次
setTimeout(function() {
drawSS();
},1000);
}
</script>
</body>
</html>以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支援我們。