xxxxxxxxxxxxxxxxxx多物体运动-原创手记-慕课网

xxxxxxxxxxxxxxxxxx多物体运动

狂四郎 2017-02-07 14:29:48 浏览 8395

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style>
div {
Width: 100px;
height: 100px;
background: red;
margin: 10px;
}
</style>
<script>
window.onload = function () {
var aDiv = document.getElementsByTagName("div")
for (var i = 0; i < aDiv.length; i++) {
aDiv[i].timer = null;
aDiv[i].onmouseover = function () {
starMove(this, 400);
};
aDiv[i].onmouseout = function () {
starMove(this, 100);
};
}
};

function starMove(obj, iTarget) {
  clearInterval(obj.timer)
  obj.timer = setInterval(function () {
      var speed = (iTarget - obj.offsetWidth) / 6
      speed = speed > 0 ? Math.ceil(speed) : Math.floor(speed);
      if (obj.offsetwidth == iTarget) {
        clearInterval(obj.timer);
      } else {
        obj.style.width = obj.offsetWidth + speed + "px"
      }
    }, 30)
  };

</script>
</head>

</html>

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