$(document).click(function() {
    $(".overlay-window").hide();
});
$(".overlay-window").click(function() {
    return false;
});

如果单击文档，则隐藏给定元素，除非单击同一元素。

标记为接受答案的答案没有考虑到元素上可以有覆盖，如对话框、弹出窗口、日期选择器等。单击这些按钮不应隐藏元素。

我制作了自己的版本，确实考虑到了这一点。它是作为KnockoutJS绑定创建的，但它可以很容易地仅转换为jQuery。

它通过第一次查询所有具有z索引或绝对位置的可见元素来工作。然后，如果在外部单击，它会根据我想要隐藏的元素来测试这些元素。如果是命中，我会计算一个新的边界矩形，该矩形考虑到覆盖边界。

ko.bindingHandlers.clickedIn = (function () {
    function getBounds(element) {
        var pos = element.offset();
        return {
            x: pos.left,
            x2: pos.left + element.outerWidth(),
            y: pos.top,
            y2: pos.top + element.outerHeight()
        };
    }

    function hitTest(o, l) {
        function getOffset(o) {
            for (var r = { l: o.offsetLeft, t: o.offsetTop, r: o.offsetWidth, b: o.offsetHeight };
                o = o.offsetParent; r.l += o.offsetLeft, r.t += o.offsetTop);
            return r.r += r.l, r.b += r.t, r;
        }

        for (var b, s, r = [], a = getOffset(o), j = isNaN(l.length), i = (j ? l = [l] : l).length; i;
            b = getOffset(l[--i]), (a.l == b.l || (a.l > b.l ? a.l <= b.r : b.l <= a.r))
                && (a.t == b.t || (a.t > b.t ? a.t <= b.b : b.t <= a.b)) && (r[r.length] = l[i]));
        return j ? !!r.length : r;
    }

    return {
        init: function (element, valueAccessor) {
            var target = valueAccessor();
            $(document).click(function (e) {
                if (element._clickedInElementShowing === false && target()) {
                    var $element = $(element);
                    var bounds = getBounds($element);

                    var possibleOverlays = $("[style*=z-index],[style*=absolute]").not(":hidden");
                    $.each(possibleOverlays, function () {
                        if (hitTest(element, this)) {
                            var b = getBounds($(this));
                            bounds.x = Math.min(bounds.x, b.x);
                            bounds.x2 = Math.max(bounds.x2, b.x2);
                            bounds.y = Math.min(bounds.y, b.y);
                            bounds.y2 = Math.max(bounds.y2, b.y2);
                        }
                    });

                    if (e.clientX < bounds.x || e.clientX > bounds.x2 ||
                        e.clientY < bounds.y || e.clientY > bounds.y2) {

                        target(false);
                    }
                }
                element._clickedInElementShowing = false;
            });

            $(element).click(function (e) {
                e.stopPropagation();
            });
        },
        update: function (element, valueAccessor) {
            var showing = ko.utils.unwrapObservable(valueAccessor());
            if (showing) {
                element._clickedInElementShowing = true;
            }
        }
    };
})();

这里还有一个解决方案：

http://jsfiddle.net/zR76D/

用法：

<div onClick="$('#menu').toggle();$('#menu').clickOutside(function() { $(this).hide(); $(this).clickOutside('disable'); });">Open / Close Menu</div>
<div id="menu" style="display: none; border: 1px solid #000000; background: #660000;">I am a menu, whoa is me.</div>

插件：

(function($) {
    var clickOutsideElements = [];
    var clickListener = false;

    $.fn.clickOutside = function(options, ignoreFirstClick) {
        var that = this;
        if (ignoreFirstClick == null) ignoreFirstClick = true;

        if (options != "disable") {
            for (var i in clickOutsideElements) {
                if (clickOutsideElements[i].element[0] == $(this)[0]) return this;
            }

            clickOutsideElements.push({ element : this, clickDetected : ignoreFirstClick, fnc : (typeof(options) != "function") ? function() {} : options });

            $(this).on("click.clickOutside", function(event) {
                for (var i in clickOutsideElements) {
                    if (clickOutsideElements[i].element[0] == $(this)[0]) {
                        clickOutsideElements[i].clickDetected = true;
                    }
                }
            });

            if (!clickListener) {
                if (options != null && typeof(options) == "function") {
                    $('html').click(function() {
                        for (var i in clickOutsideElements) {
                            if (!clickOutsideElements[i].clickDetected) {
                                clickOutsideElements[i].fnc.call(that);
                            }
                            if (clickOutsideElements[i] != null) clickOutsideElements[i].clickDetected = false;
                        }
                    });
                    clickListener = true;
                }
            }
        }
        else {
            $(this).off("click.clickoutside");
            for (var i = 0; i < clickOutsideElements.length; ++i) {
                if (clickOutsideElements[i].element[0] == $(this)[0]) {
                    clickOutsideElements.splice(i, 1);
                }
            }
        }

        return this;
    }
})(jQuery);

可以为DOM元素设置tabindex。当用户在DOM元素外部单击时，这将触发一个模糊事件。

Demo

<div tabindex="1">
    Focus me
</div>

document.querySelector("div").onblur = function(){
   console.log('clicked outside')
}
document.querySelector("div").onfocus = function(){
   console.log('clicked inside')
}

我有一个应用程序，它的工作方式与Eran的示例类似，只是当我打开菜单时，我会将单击事件附加到主体。。。有点像这样：

$('#menucontainer').click(function(event) {
  $('html').one('click',function() {
    // Hide the menus
  });

  event.stopPropagation();
});

有关jQuery的one（）函数的更多信息

使用流中断、模糊/聚焦事件或任何其他棘手的技术，只需将事件流与元素的亲属关系匹配即可：

$(document).on("click.menu-outside", function(event){
    // Test if target and it's parent aren't #menuscontainer
    // That means the click event occur on other branch of document tree
    if(!$(event.target).parents().andSelf().is("#menuscontainer")){
        // Click outisde #menuscontainer
        // Hide the menus (but test if menus aren't already hidden)
    }
});

要删除事件侦听器外部的单击，只需执行以下操作：

$(document).off("click.menu-outside");