jQuery 当用户滚动时移动图像或元素
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Move an image or element when user scrolls
提问by Esser
I'm trying to figure out how to move an image on the scroll event. I used .animate, but that moves it all the way, even after the user lets go. I want it to stop when the user stops scrolling.
我想弄清楚如何在滚动事件上移动图像。我使用了.animate，但它一直在移动，即使在用户放手之后也是如此。我希望它在用户停止滚动时停止。
采纳答案by Craighead
Stack:Determine the direction of scroll
By using this, you can then use .animate
通过使用它，您可以使用 .animate
var lastScrollTop = 0;
$("div").scroll(function (event) {
var st = $(this).scrollTop();
if (st > lastScrollTop) {
$('img').animate({top: '-=10'}, 10);
} else {
$('img').animate({top: '+=10'}, 10);
}
lastScrollTop = st;
});
Disregard:If you would like the image to move with the page, add position: fixed;to the CSS.
忽略：如果您希望图像随页面移动，请添加position: fixed;到 CSS。
回答by Arno
You could use
你可以用
$(window).scroll(function() { $(image).position($(image).position().top + 10); });
$(window).scroll(function() { $(image).position($(image).position().top + 10); });
depending on your CSS. If you could provide some code (in a jsFiddle), maybe I would be able to help you a bit better.
取决于你的 CSS。如果您可以提供一些代码（在 jsFiddle 中），也许我可以更好地帮助您。
