實現效果:
時鐘
關鍵點:
獲取時間
var data = new Date()
獲取小時/分鐘/秒
date.getHours();
date.getMinutes();
date.getSeconds();
動畫:
transform-origin: 100%; //旋轉的中心點
transition: all 0.05s; //進行動畫的時間
transition-timing-function: cubic-bezier(0.1,2.7,0.58,1); //進行運動的軌跡
transform: rotate(90deg); //旋轉的角度
css
*{
padding: 0;
margin: 0;
}
/*背景*/
html {
background: #018DED url(http://unsplash.it/1500/1000?image=881&blur=50) bottom center;
background-size: cover;
font-family: 'helvetica neue';
text-align: center;
font-size: 10px;
}
body {
font-size: 2rem;
display: flex;
flex: 1;
min-height: 100vh;
align-items: center;
}
/*鬧鐘的框*/
.clock {
width: 30rem;
height: 30rem;
border: 20px solid white;
border-radius: 50%;
margin: 50px auto;
position: relative;
padding: 2rem;
box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.1),
inset 0 0 0 3px #EFEFEF,
inset 0 0 10px black,
0 0 10px rgba(0, 0, 0, 0.2);
}
/*調整指針的位置*/
.clock-face {
position: relative;
width: 100%;
height: 100%;
transform: translateY(-3px);
transform: rotate(90deg);
}
/*每個的指針的樣式*/
.hand {
width: 50%;
position: absolute;
top: 50%;
transform-origin: right;
}
.hour-hand{
width: 30%;
height: 10px;
left: 20%;
background: white;
border-radius: 10px;
}
.min-hand{
width: 40%;
height: 8px;
left: 10%;
background: black;
}
.second-hand{
height: 2px;
background: red;
}
html
<div class="clock">
<div class="clock-face">
<div class="hand hour-hand"></div>
<div class="hand min-hand"></div>
<div class="hand second-hand"></div>
</div>
</div>
javascript
function cl(){
var date = new Date();
var SH = document.querySelector(".second-hand");
var SHD = (date.getSeconds()/60 )* 360;
SH.style.transform = `rotate(${SHD}deg)`;
var MH = document.querySelector(".min-hand");
var MHD = (date.getMinutes()/60 )* 360;
// console.log(SHD);
MH.style.transform = `rotate(${MHD}deg)`;
var HH = document.querySelector(".hour-hand");
var HHD = (date.getHours()/12 )* 360;
// console.log(SHD);
HH.style.transform = `rotate(${HHD}deg)`;
}
setInterval(cl,1000);