链式运动
2016-09-29 09:27
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CSS：
#li1{
width: 200px;
height: 100px;
border: 4px solid gray;
filter: alpha(opacity:30);
opacity: 0.3;
background: red;
list-style-type: none;
}
HTML:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>链式运动</title>
<link rel="stylesheet" href="move.css">
<script src="move.js">
</script>
<script>
window.onload = function(){
var li = document.getElementById('li1');
li.onmouseover = function(){
startMover(li,400,'width',function(){
startMover(li,200,'height',function(){
startMover(li,100,'opacity');
});
});
}
li.onmouseout = function(){
startMover(li,30,'opacity',function(){
startMover(li,100,'height',function(){
startMover(li,200,'width');
})
})
}
}
</script>
<style type="text/css">
</style>
</head>
<body>
<ul><li id="li1"></li></ul>
</body>
</html>
javascript：
function startMover(obj,iTarget,attr,fn){
clearInterval(obj.timer)
obj.timer = setInterval(function(){
var icur = 0;
if (attr == 'opacity') {
icur = Math.round(parseFloat(getStyle(obj,attr)) * 100);
}else{
icur = parseInt(getStyle(obj,attr));
}
var speed = (iTarget - icur) / 8;
speed = speed > 0 ? Math.ceil(speed):Math.floor(speed);
if (icur == iTarget) {
clearInterval(obj.timer);
if (fn) {
fn();
}
}else{
if (attr == 'opacity') {
obj.style.filter = 'alpha(opacity:'+(icur + speed)+')'
obj.style.opacity = (icur + speed) / 100;
}else{
obj.style[attr] = icur + speed + 'px';
}
}
},30)
}
function getStyle(obj, attr) {
if (obj.currentStyle) {
return obj.currentStyle[attr];
} else {
return getComputedStyle(obj, false)[attr];
}
}
#li1{
width: 200px;
height: 100px;
border: 4px solid gray;
filter: alpha(opacity:30);
opacity: 0.3;
background: red;
list-style-type: none;
}
HTML:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>链式运动</title>
<link rel="stylesheet" href="move.css">
<script src="move.js">
</script>
<script>
window.onload = function(){
var li = document.getElementById('li1');
li.onmouseover = function(){
startMover(li,400,'width',function(){
startMover(li,200,'height',function(){
startMover(li,100,'opacity');
});
});
}
li.onmouseout = function(){
startMover(li,30,'opacity',function(){
startMover(li,100,'height',function(){
startMover(li,200,'width');
})
})
}
}
</script>
<style type="text/css">
</style>
</head>
<body>
<ul><li id="li1"></li></ul>
</body>
</html>
javascript：
function startMover(obj,iTarget,attr,fn){
clearInterval(obj.timer)
obj.timer = setInterval(function(){
var icur = 0;
if (attr == 'opacity') {
icur = Math.round(parseFloat(getStyle(obj,attr)) * 100);
}else{
icur = parseInt(getStyle(obj,attr));
}
var speed = (iTarget - icur) / 8;
speed = speed > 0 ? Math.ceil(speed):Math.floor(speed);
if (icur == iTarget) {
clearInterval(obj.timer);
if (fn) {
fn();
}
}else{
if (attr == 'opacity') {
obj.style.filter = 'alpha(opacity:'+(icur + speed)+')'
obj.style.opacity = (icur + speed) / 100;
}else{
obj.style[attr] = icur + speed + 'px';
}
}
},30)
}
function getStyle(obj, attr) {
if (obj.currentStyle) {
return obj.currentStyle[attr];
} else {
return getComputedStyle(obj, false)[attr];
}
}
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