简单的JS多物体的运动---运动和透明度的变化

时间:2023-12-26 22:57:25
 <!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
<style>
#div1 {width: 100px; height: 200px; background: red; position: absolute; left: -100px; top: 100px;}
#div2 {width: 30px; height: 60px; background: black; position: absolute; right: -30px; top: 70px; color: white; text-align: center;}
#img1 { opacity: 0.3; miaov: 妙味; filter: alpha(opacity=30); margin-left: 200px;}
</style>
<script>
window.onload = function() { var oDiv1 = document.getElementById('div1');
var oDiv2 = document.getElementById('div2');
var oImg = document.getElementById('img1');
//var iTimer = null; oDiv1.onmouseover = function() {
startMove(this, 'left', 0, 10);
} oDiv1.onmouseout = function() {
startMove(this, 'left', -100, -10);
} oImg.onmouseover = function() {
startMove(this, 'opacity', 100, 10);
} oImg.onmouseout = function() {
startMove(this, 'opacity', 30, -10);
} function startMove(obj, attr, iTarget, iSpeed) {
clearInterval(obj.iTimer);
var iCur = 0; obj.iTimer = setInterval(function() { if (attr == 'opacity') {
iCur = Math.round(css( obj, 'opacity' ) * 100);
} else {
iCur = parseInt(css(obj, attr));
} if (iCur == iTarget) {
clearInterval(obj.iTimer);
} else {
if (attr == 'opacity') {
obj.style.opacity = (iCur + iSpeed) / 100;
obj.style.filter = 'alpha(opacity='+ (iCur + iSpeed) +')';
} else {
obj.style[attr] = iCur + iSpeed + 'px';
}
} }, 30);
} function css(obj, attr) {
if (obj.currentStyle) {
return obj.currentStyle[attr];
} else {
return getComputedStyle(obj, false)[attr];
}
} }
</script>
</head> <body>
<div id="div1">
<div id="div2">分享到</div>
</div> <img src="1.jpg" id="img1" />
</body>
</html>