我希望在我的动画插件中有某种反弹效果,但它不起作用。根本没有调用回调:
$(function() {
var offset = $("#first").offset();
var position = $(window).scrollTop();
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll>position) {
$("body")
.animate({
scrollTop: offset.top + $("#first").innerHeight() + 150
},
1000,
"easeInOutQuart",
function() {
$("body").animate({
scrollTop: offset.top - 150
},
1000,
"easeOutBounce"
)
})
}
})
})
好的..这是我的HTML代码..我不知道你为什么工作得很好..但我的不是.. $('html')不起作用但你的工作正常..
<html lang="en" xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>Bounce Test Pad</title>
<link rel=stylesheet href="index.css" type= "text/css" />
<script type="text/javascript" src ="jquery-1.3.2.js"></script>
<script type = "text/javascript" src="jquery.easing.1.3.js"></script>
</head>
<body>
<img id="lightbulb" src = "img/veioza.png">
<div id="wrapper">
<img id="first" class="images" src="img/nike.jpg" />
<img id ="second" class = "images" src="img/golden.jpg" />
<img id = "third" class ="images" src ="img/a.jpg" />
</div>
<script type="text/javascript">
$(window).resize(function() {
centerIt();
});
$(function() {
centerIt();
})
function centerIt() {
var viewportWidthSize = window.innerWidth;
var pixels = (viewportWidthSize / 2) - $("#first").width() / 2;
$("#wrapper img").css("left", pixels);
};
$(function() {
var offset = $("#first").offset();
var prevpos = $(window).scrollTop();
var animating = false;
$(window).scroll(function() {
var curpos = $(window).scrollTop();
if (curpos>prevpos && !animating) {
$('html').animate(
{scrollTop: offset.top + $("#first").height()},
1000,
"easeInOutQuart"
)
}
animating = true;
})
})
</script>
</body>
</html>
答案 0 :(得分:3)
AnhTu对动画提升滚动事件是正确的。
以下是固定演示:http://jsbin.com/alede(您可以在此处编辑演示:http://jsbin.com/alede/edit)
您必须添加代码以防止在动画仍在进行时重新制作动画:
var status = $('#status');
var offset = $("#downcontent").offset();
var height = $("#downcontent").height();
var animating = false;
var prevpos = $(window).scrollTop();
$(window).scroll(function(){
var curpos = $(window).scrollTop();
if (curpos > prevpos && !animating) {
$('html').animate(
{scrollTop: offset.top + height},
1000,
"easeInOutQuart",
function(){
$('html').animate(
{scrollTop: offset.top},
1000,
"easeOutBounce",
function(){
animating = false;
status.html('Both animations finished.<br />');
}
);
status.html('First animation finished.<br />Second animation started<br />');
}
);
animating = true;
status.html('First animation started<br />');
}
prevpos = curpos;
});
修改强>
好的,我用你的HTML代码创建了另一个演示。我修改了一点JavaScript并添加了一些CSS规则:http://jsbin.com/oqapa
答案 1 :(得分:0)
不使用回调
进行if (scroll>position) {
$("body")
.animate({
scrollTop: offset.top + $("#first").innerHeight() + 150
},1000,"easeInOutQuart")
.animate({
scrollTop: offset.top - 150
},1000,"easeOutBounce")
})
}
但我认为你必须绑定到另一个事件。因为当您为主体设置动画时,它可能会引发事件window.scroll