这里是Evan的答案的改进版本，它似乎正确地解释了溢出逻辑。

            function element_scrollbars(node) {
                var element = $(node);
                var overflow_x = element.css("overflow-x");
                var overflow_y = element.css("overflow-y");
                var overflow = element.css("overflow");
                if (overflow_x == "undefined") overflow_x == "";
                if (overflow_y == "undefined") overflow_y == "";
                if (overflow == "undefined") overflow == "";
                if (overflow_x == "") overflow_x = overflow;
                if (overflow_y == "") overflow_y = overflow;
                var scrollbar_vertical = (
                    (overflow_y == "scroll")
                    || (
                        (
                            (overflow_y == "hidden")
                            || (overflow_y == "visible")
                        )
                        && (
                            (node.scrollHeight > node.clientHeight)
                        )
                    )
                );
                var scrollbar_horizontal = (
                    (overflow_x == "scroll")
                    || (
                        (
                            (overflow_x == "hidden")
                            || (overflow_x == "visible")
                        )
                        && (
                            (node.scrollWidth > node.clientWidth)
                        )
                    )
                );
                return {
                    vertical: scrollbar_vertical,
                    horizontal: scrollbar_horizontal
                };
            }

你需要element。scrollheight。将其与$(element).height()进行比较。

呃，这里每个人的答案都是不完整的，让我们停止使用jquery在SO答案已经请。如果你想了解jquery的信息，请查看jquery的文档。

下面是一个通用的纯javascript函数，用于测试元素是否具有完整的滚动条:

// dimension - Either 'y' or 'x'
// computedStyles - (Optional) Pass in the domNodes computed styles if you already have it (since I hear its somewhat expensive)
function hasScrollBars(domNode, dimension, computedStyles) {
    dimension = dimension.toUpperCase()
    if(dimension === 'Y') {
        var length = 'Height'
    } else {
        var length = 'Width'
    }

    var scrollLength = 'scroll'+length
    var clientLength = 'client'+length
    var overflowDimension = 'overflow'+dimension

    var hasVScroll = domNode[scrollLength] > domNode[clientLength]


    // Check the overflow and overflowY properties for "auto" and "visible" values
    var cStyle = computedStyles || getComputedStyle(domNode)
    return hasVScroll && (cStyle[overflowDimension] == "visible"
                         || cStyle[overflowDimension] == "auto"
                         )
          || cStyle[overflowDimension] == "scroll"
}

我为jQuery做了一个新的自定义:pseudo选择器来测试一个项目是否具有以下css属性之一:

溢出(滚动|汽车): overflow-x(滚动|汽车): overflow-y(滚动|汽车):

我想找到另一个元素的最近的可滚动父元素，所以我还写了另一个小jQuery插件来找到最近的溢出父元素。

这种解决方案可能不是最好的，但它似乎确实有效。我将它与$。scrollTo插件。有时我需要知道一个元素是否在另一个可滚动容器中。在这种情况下，我想滚动父滚动元素与窗口。

我可能应该把它包装在一个单独的插件中，并添加psuedo选择器作为插件的一部分，以及公开一个“最近”方法来查找最近的(父)可滚动容器。

Anywho……在这儿。

美元。isScrollable jQuery插件:

$.fn.isScrollable = function(){
    var elem = $(this);
    return (
    elem.css('overflow') == 'scroll'
        || elem.css('overflow') == 'auto'
        || elem.css('overflow-x') == 'scroll'
        || elem.css('overflow-x') == 'auto'
        || elem.css('overflow-y') == 'scroll'
        || elem.css('overflow-y') == 'auto'
    );
};

$(':scrollable') jQuery伪选择器:

$.expr[":"].scrollable = function(a) {
    var elem = $(a);
    return elem.isScrollable();
};

jQuery插件$.scrollableparent()

$.fn.scrollableparent = function(){
    return $(this).closest(':scrollable') || $(window); //default to $('html') instead?
};

实现非常简单

//does a specific element have overflow scroll?
var somedivIsScrollable = $(this).isScrollable();
//use :scrollable psuedo selector to find a collection of child scrollable elements
var scrollableChildren = $(this).find(':scrollable');
//use $.scrollableparent to find closest scrollable container
var scrollableparent = $(this).scrollableparent();

更新:我发现Robert Koritnik已经提出了一个更强大的:可滚动的伪选择器，它将识别可滚动容器的可滚动轴和高度，作为他的$.scrollintoview() jQuery插件的一部分。scrollintoview插件

下面是他的花哨的伪选择器(道具):

    $.extend($.expr[":"], {

    scrollable: function (element, index, meta, stack) {

        var direction = converter[typeof (meta[3]) === "string" && meta[3].toLowerCase()] || converter.both;

        var styles = (document.defaultView && document.defaultView.getComputedStyle ? document.defaultView.getComputedStyle(element, null) : element.currentStyle);

        var overflow = {

            x: scrollValue[styles.overflowX.toLowerCase()] || false,

            y: scrollValue[styles.overflowY.toLowerCase()] || false,

            isRoot: rootrx.test(element.nodeName)

        };



        // check if completely unscrollable (exclude HTML element because it's special)

        if (!overflow.x && !overflow.y && !overflow.isRoot)

        {

            return false;

        }



        var size = {

            height: {

                scroll: element.scrollHeight,

                client: element.clientHeight

            },

            width: {

                scroll: element.scrollWidth,

                client: element.clientWidth

            },

            // check overflow.x/y because iPad (and possibly other tablets) don't dislay scrollbars

            scrollableX: function () {

                return (overflow.x || overflow.isRoot) && this.width.scroll > this.width.client;

            },

            scrollableY: function () {

                return (overflow.y || overflow.isRoot) && this.height.scroll > this.height.client;

            }

        };

        return direction.y && size.scrollableY() || direction.x && size.scrollableX();

    }

});

一个小插件。

(function($) {
    $.fn.hasScrollBar = function() {
        return this.get(0).scrollHeight > this.height();
    }
})(jQuery);

像这样用，

$('#my_div1').hasScrollBar(); // returns true if there's a `vertical` scrollbar, false otherwise..

测试工作在Firefox, Chrome, IE6,7,8

但在主体标签选择器上不能正常工作

demo

Edit

我发现，当你有水平滚动条，导致垂直滚动条出现，这个功能不工作....

我找到了另一个解决办法…使用clientHeight

return this.get(0).scrollHeight > this.get(0).clientHeight;

也许有一个更简单的解决方案。

if ($(document).height() > $(window).height()) {
    // scrollbar
}