无缝 JQuery 字幕/自动收报机
我在这里找到了一位用户发布的用于无缝 jQuery 选取框/股票代码的代码。我已将其修改为在滚动/滚动出时启动和停止,但一旦用户滚动出,它通常会滞后。它永远不会完全停止,但股票滚动的速度有时是其原始速度的 1/10。我已经加快了速度,所以更容易看到这种滞后。无论如何,如果有人知道如何解决这个问题,我将不胜感激。
jQuery
$(function() {
var marquee = $("#scroller");
marquee.css({"overflow": "hidden", "width": "100%"});
// wrap "My Text" with a span (IE doesn't like divs inline-block)
marquee.wrapInner("<span>");
marquee.find("span").css({ "width": "49%", "display": "inline-block", "text-align":"center", "padding-right":"1%" });
marquee.append(marquee.find("span").clone()); // now there are two spans with "My Text"
marquee.wrapInner("<div class='scrolling'>");
marquee.find("div").css("width", "200%");
var reset = function() {
$(this).css({"margin-left":"0%"});
$(this).animate({ "margin-left": "-100%" }, 500, 'linear', reset);
};
reset.call(marquee.find("div"));
marquee.find("div").bind({
mouseenter: function () {
$(this).stop();
if($(this).css("margin-left") == "-"+$("#scroller").width() + "px") $(this).css("margin-left", "0%");
},
mouseleave: function() {
$(this).stop().animate({ "margin-left": "-100%" }, 500, 'linear', reset);
}
});
});
HTML
<div id="scroller">
Lorem ipsum dolor sit amet. — <a href="#">Username</a>
Lorem ipsum dolor sit amet. — <a href="#">Username</a>
Lorem ipsum. — <a href="#">Username</a>
Lorem ipsum dolor sit amet. — <a href="#">Username</a>
Lorem ipsum dolor sit amet. — <a href="#">Username</a>
Lorem ipsum dolor sit amet. — <a href="#">Username</a>
Lorem ipsum. — <a href="#">Username</a>
Lorem ipsum dolor sit amet. — <a href="#">Username</a>
</div>
谢谢,
格雷格
I found code posted by a user on here for a seamless jQuery marquee/ticker. I've modified it to start and stop when scrolled over/scrolled out of, but it often lags once the user scrolls out. It never completely stops, but the speed at which the ticker scrolls is sometimes 1/10 of its original speed. I've sped it up so it's easier to see this lagging. Anyway, if someone has any idea of how to fix this, I would greatly appreciate it.
jQuery
$(function() {
var marquee = $("#scroller");
marquee.css({"overflow": "hidden", "width": "100%"});
// wrap "My Text" with a span (IE doesn't like divs inline-block)
marquee.wrapInner("<span>");
marquee.find("span").css({ "width": "49%", "display": "inline-block", "text-align":"center", "padding-right":"1%" });
marquee.append(marquee.find("span").clone()); // now there are two spans with "My Text"
marquee.wrapInner("<div class='scrolling'>");
marquee.find("div").css("width", "200%");
var reset = function() {
$(this).css({"margin-left":"0%"});
$(this).animate({ "margin-left": "-100%" }, 500, 'linear', reset);
};
reset.call(marquee.find("div"));
marquee.find("div").bind({
mouseenter: function () {
$(this).stop();
if($(this).css("margin-left") == "-"+$("#scroller").width() + "px") $(this).css("margin-left", "0%");
},
mouseleave: function() {
$(this).stop().animate({ "margin-left": "-100%" }, 500, 'linear', reset);
}
});
});
HTML
<div id="scroller">
Lorem ipsum dolor sit amet. — <a href="#">Username</a>
Lorem ipsum dolor sit amet. — <a href="#">Username</a>
Lorem ipsum. — <a href="#">Username</a>
Lorem ipsum dolor sit amet. — <a href="#">Username</a>
Lorem ipsum dolor sit amet. — <a href="#">Username</a>
Lorem ipsum dolor sit amet. — <a href="#">Username</a>
Lorem ipsum. — <a href="#">Username</a>
Lorem ipsum dolor sit amet. — <a href="#">Username</a>
</div>
Thanks,
Greg
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很高兴您找到了足够的答复,但是它似乎非常复杂,并且寻找类似解决方案的新用户无疑会感到困惑,除非他们对 JavaScript 有相当的了解。一个类似的 jQuery 插件,具有所有功能;股票行情停止和开始回调,鼠标悬停时自动暂停,以便您清楚地阅读/单击正确的项目。并无缝过渡,完全控制方向和速度。您可能想查看 jQuery webTicker 这是免费使用插件,尽情享受。
glad you found an adequate reply however it seems utterly complex and new users looking for a similar solution will most undoubtedly get confused unless they are fairly knowledgeable in javascript. A similar jQuery plugin with all the funcionality; ticker stop and start callbacks, automatic pause on mouse over to allow you reading clearly/clicking on the right item. And seamless transition with full control of direction and speed. You might want to look at the jQuery webTicker this is a free to use plugin so enjoy.
答案似乎在于 JQuery 在 .clone() 和 .remove() 调用中管理内存的方式。有一个很好的讨论:
jQuery 内存泄漏与 DOM 删除
更多详细信息解决方法可在:
http://forum.jquery.com /topic/severe-memory-leak-with-clone
祝你好运!
It seems the answer lies in the way JQuery manages memory in the .clone() and .remove() calls. There's a very good discussion at:
jQuery memory leak with DOM removal
Further details and a workaround are available at:
http://forum.jquery.com/topic/severe-memory-leak-with-clone
Good luck!