【每日一练】224—JS实现一款时钟效果

每日一练11个月前发布 admin
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第224练最终效果:

【每日一练】224—JS实现一款时钟效果

代码实现过程:

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″ />
    <link rel=”stylesheet” href=”index.css” />
    <title>第224练</title>
  </head>
  <body>
    <div class=”clock”>
      <div class=”numbers”>
        <div class=”twelve”>12</div>
        <div class=”three”>3</div>
        <div class=”six”>6</div>
        <div class=”nine”>9</div>
      </div>
      <div class=”arrows”>
        <div class=”hour”></div>
        <div class=”minute”></div>
        <div class=”second”></div>
      </div>
      <img
        src=”Rolex_logo.svg.png”
        alt=””
      />
    </div>
    <script src=”index.js”></script>
  </body>
</html>

CSS:

body {
  margin: 0;
  padding: 0;
  font-family: ‘Courier New’, Courier, monospace;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #fafafa;
}
img {
  position: absolute;
  top: 60px;
  left: 50%;
  transform: translateX(-50%);
  width: 70px;
  z-index: 2;
}
.clock {
  width: 350px;
  height: 350px;
  background-color: lightgray;
  border-radius: 100%;
  border: 5px solid darkgrey;
  box-shadow: 1px 1px 4px rgba(0,0,0,.7);
  position: relative;
}
.numbers div {
  position: absolute;
  font-size: 27px;
  font-weight: bold;
  color: lightgoldenrodyellow;
  text-shadow: 1px 1px 2px rgba(0,0,0,.7);
}
.twelve {
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
}
.three {
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
}
.six {
  bottom: 6px;
  left: 50%;
  transform: translateX(-50%);
}
.nine {
  left: 6px;
  top: 50%;
  transform: translateY(-50%);
}
.arrows {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}
.arrows::before {
  content: “”;
  width: 25px;
  height: 25px;
  background-color: darkgreen;
  border-radius: 50%;
  box-shadow: 1px 1px 2px rgba(0,0,0,.7);
  z-index: 4;
}
.arrows div {
  width: 7px;
  height: 120px;
  background-color: white;
  position: absolute;
  bottom: 50%;
  box-shadow: 1px 1px 2px rgba(0,0,0,.7);
  border-radius: 50% 50% 0 0;
  transform-origin: bottom center;
  z-index: 3;
}
.arrows .hour {
  height: 80px;
  transform: rotate(30deg);
}
.arrows .second {
  background-color: goldenrod;
  transform: rotate(250deg);
}

JS:

const hour = document.querySelector(“.hour”);
const minute = document.querySelector(“.minute”);
const second = document.querySelector(“.second”);
function setDate() {
  const now = new Date();
  const getSecond = now.getSeconds();
  const getMinute = now.getMinutes();
  const getHour = now.getHours();
  const secondDegree = (getSecond / 60) * 360;
  const minuteDegree = (getMinute / 60) * 360;
  const hourDegree = (getHour / 12) * 360;
  second.style.transform = `rotate(${secondDegree}deg)`;
  minute.style.transform = `rotate(${minuteDegree}deg)`;
  hour.style.transform = `rotate(${hourDegree}deg)`;
}
setInterval(setDate, 1000);
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