HTML 页面加载动画效果

浏览数：16 / 时间：2015年06月09日

浏览器：Chrome

<!doctype html>
<html>
<head>
  <title>CSS transform: CSS only loading spinners</title>
<style>
/* general styling */
  body {
    width:450px;
    margin:18px auto;
  }

/* position the bars and balls correctly (rotate them and translate them outward)*/
.bar1 {
  transform:rotate(0deg) translate(0, -40px);opacity:0.12;
}
.bar2 {
  transform:rotate(45deg) translate(0, -40px);opacity:0.25;
}
.bar3 {
  transform:rotate(90deg) translate(0, -40px);opacity:0.37;
}
.bar4 {
  transform:rotate(135deg) translate(0, -40px);opacity:0.50;
}
.bar5 {
  transform:rotate(180deg) translate(0, -40px);opacity:0.62;
}
.bar6 {
  transform:rotate(225deg) translate(0, -40px);opacity:0.75;
}
.bar7 {
  transform:rotate(270deg) translate(0, -40px);opacity:0.87;
}
.bar8 {
  transform:rotate(315deg) translate(0, -40px);opacity:1;
}

/* set up the three bar spinners */
#div1, #div2,#div3 {
  position:relative;
  width:100px;
  height:100px;
  margin:25px;
  float:left;
  transform:scale(0.5);
  transform:scale(0.5);

  /* not used right now: */
  animation-name: rotateThis;
  animation-duration:2s;
  animation-iteration-count:infinite;
  animation-timing-function:linear;
}
#div1 div,
#div2 div,
#div3 div {
  width:10px;
  height:30px;
  background:#000;
  position:absolute;
  top:35px;
  left:45px;
}

/* shadows for the first spinner */
#div1 div {
  box-shadow:black 0 0 4px
}
  /* rounded outer corners for the second */
#div2 div {
  border-top-left-radius:10px;
  border-top-right-radius:10px;
}

/* full rounded corners and partially hidden for the third */
#div3 div {
  border-radius:20px;
  border-radius:20px;
}
#div3 .bar1,
#div3 .bar2,
#div3 .bar3 {opacity:0;}


/* set up the three ball spinners */
#div4, #div5, #div6 {
  position:relative;
  width:100px;
  height:100px;
  margin:25px;
  border-radius:100px;
  float:left;
  transform:scale(0.5);

  animation-name: rotateThis;
  animation-duration:2s;
  animation-iteration-count:infinite;
  animation-timing-function:linear;
}
#div4 div,
#div5 div,
#div6 div {
  width:20px;
  height:20px;
  background:#000;
  border-radius:40px;
  position:absolute;
  left:40px;
  top:40px;
}
/* add a shadow to the first */
#div4 div {
  box-shadow:black 0 0 4px;
}

/* increase the balls in size */
#div5 .bar1 {
  transform:rotate(0deg)   translate(0, -40px) scale(0.1);opacity:0.12;}
#div5 .bar2 {
  transform:rotate(45deg)  translate(0, -40px) scale(0.2);opacity:0.25;}
#div5 .bar3 {
  transform:rotate(90deg)  translate(0, -40px) scale(0.4);opacity:0.37;}
#div5 .bar4 {
  transform:rotate(135deg) translate(0, -40px) scale(0.6);opacity:0.50;}
#div5 .bar5 {
  transform:rotate(180deg) translate(0, -40px) scale(0.8);opacity:0.62;}
#div5 .bar6 {
  transform:rotate(225deg) translate(0, -40px) scale(1);opacity:0.75;}
#div5 .bar7 {
  transform:rotate(270deg) translate(0, -40px) scale(1.2);opacity:0.87;}
#div5 .bar8 {
  transform:rotate(315deg) translate(0, -40px) scale(1.4);opacity:1;}

/* hide the last halve */
#div6 .bar1 ,
#div6 .bar2,
#div6 .bar3 {opacity:0;}

/* uncomment this to use css animation in webkit browsers */
/* @-webkit-keyframes rotateThis {
  from {-webkit-transform:scale(0.5) rotate(0deg);}
  to {-webkit-transform:scale(0.5) rotate(360deg);}
} */
</style>
<script>

  //simple script to rotate all spinners 45 degrees on each tick
  //this works differently from the css transforms, which is smooth

  var count = 0;
  function rotate() {
    var elem = document.getElementById(‘div1‘);
    var elem2 = document.getElementById(‘div2‘);
    var elem3 = document.getElementById(‘div3‘);
    var elem4 = document.getElementById(‘div4‘);
    var elem5 = document.getElementById(‘div5‘);
    var elem6 = document.getElementById(‘div6‘);
    elem.style.WebkitTransform = ‘scale(0.5) rotate(‘+count+‘deg)‘;
    elem2.style.WebkitTransform = ‘scale(0.5) rotate(‘+count+‘deg)‘;
    elem3.style.WebkitTransform = ‘scale(0.5) rotate(‘+count+‘deg)‘;
    elem4.style.WebkitTransform = ‘scale(0.5) rotate(‘+count+‘deg)‘;
    elem5.style.WebkitTransform = ‘scale(0.5) rotate(‘+count+‘deg)‘;
    elem6.style.WebkitTransform = ‘scale(0.5) rotate(‘+count+‘deg)‘;
    if (count==360) { count = 0 }
    count+=45;
    window.setTimeout(rotate, 100);
  }
  window.setTimeout(rotate, 100);
</script>

</head>

<body>
<h2>Bars:</h2>
<div id="div1">
  <div class="bar1"></div>
  <div class="bar2"></div>
  <div class="bar3"></div>
  <div class="bar4"></div>
  <div class="bar5"></div>
  <div class="bar6"></div>
  <div class="bar7"></div>
  <div class="bar8"></div>
</div>
<div id="div2">
  <div class="bar1"></div>
  <div class="bar2"></div>
  <div class="bar3"></div>
  <div class="bar4"></div>
  <div class="bar5"></div>
  <div class="bar6"></div>
  <div class="bar7"></div>
  <div class="bar8"></div>
</div>
<div id="div3">
  <div class="bar1"></div>
  <div class="bar2"></div>
  <div class="bar3"></div>
  <div class="bar4"></div>
  <div class="bar5"></div>
  <div class="bar6"></div>
  <div class="bar7"></div>
  <div class="bar8"></div>
</div>
<h2 style="clear:both">Balls:</h2>
<div id="div4">
  <div class="bar1"></div>
  <div class="bar2"></div>
  <div class="bar3"></div>
  <div class="bar4"></div>
  <div class="bar5"></div>
  <div class="bar6"></div>
  <div class="bar7"></div>
  <div class="bar8"></div>
</div>
<div id="div5">
  <div class="bar1"></div>
  <div class="bar2"></div>
  <div class="bar3"></div>
  <div class="bar4"></div>
  <div class="bar5"></div>
  <div class="bar6"></div>
  <div class="bar7"></div>
  <div class="bar8"></div>
</div>
<div id="div6">
  <div class="bar1"></div>
  <div class="bar2"></div>
  <div class="bar3"></div>
  <div class="bar4"></div>
  <div class="bar5"></div>
  <div class="bar6"></div>
  <div class="bar7"></div>
  <div class="bar8"></div>
</div>
</body>