Javascript 在div外滚动将滚动内容

我如何才能在div外滚动，操作将分配给隐藏溢出的固定div，在我的例子中是“可滚动”内容

HTML

<div id="container">
<div id="header">Header</div>        
    <div id="scrollable_content">
        Very long content<br />
        Very long content<br />
        ...
        Very long content<br />
        Very long content<br />        
    </div>
<div id="footer">Footer</div>

​

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这是一个例子，尝试使用mousewheel插件，或者您可能会找到其他插件，甚至创建自己的解决方案，但看起来工作方向是这样的，尽管您可能需要调整处理程序的工作方式。虽然我修改了handle函数以满足您的需要，但大部分代码都来自

/** This is high-level function.
 * It must react to delta being more/less than zero.
 */
function handle(delta) {
    var target = $('#scrollable_content');
    var top = target.scrollTop() - delta;
    target.scrollTop(top);
}

/** Event handler for mouse wheel event.
 */
function wheel(event){
    var delta = 0;
    if (!event) /* For IE. */
            event = window.event;
    if (event.wheelDelta) { /* IE/Opera. */
            delta = event.wheelDelta/120;
    } else if (event.detail) { /** Mozilla case. */
            /** In Mozilla, sign of delta is different than in IE.
             * Also, delta is multiple of 3.
             */
            delta = -event.detail/3;
    }

    /** If delta is nonzero, handle it.
     * Basically, delta is now positive if wheel was scrolled up,
     * and negative, if wheel was scrolled down.
     */
    if (delta) handle(delta);

    /** Prevent default actions caused by mouse wheel.
     * That might be ugly, but we handle scrolls somehow
     * anyway, so don't bother here..
     */
    if (event.preventDefault) event.preventDefault();
    event.returnValue = false;
}


if (window.addEventListener) window.addEventListener('DOMMouseScroll', wheel, false);
window.onmousewheel = document.onmousewheel = wheel;

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为了澄清，如果用户在页面上的任何地方滚动鼠标滚轮，而不仅仅是在div上，那么您希望滚动可滚动的内容？您是在谈论javascript事件，比如$（'scroll'，function（）{…}）。在（'scroll'，function（）{…}）上？是的，在页面上和使用jquerys时应该是$（'body'）……是的，但是问题scoll事件只会在页面发生实际scoll时触发，否则不会触发