我采纳了SLaks的想法，并将其整合到一个小班中。

function HoverWatcher(selector){
  this.hovering = false;
  var self = this; 

  this.isHoveringOver = function() { 
    return self.hovering; 
  } 

    $(selector).hover(function() { 
      self.hovering = true; 
    }, function() { 
      self.hovering = false; 
    }) 
} 

var box1Watcher = new HoverWatcher('#box1');
var box2Watcher = new HoverWatcher('#box2');



$('#container').click(function() {
  alert("box1.hover = " + box1Watcher.isHoveringOver() +
        ", box2.hover = " + box2Watcher.isHoveringOver());
});

我不能使用上面的任何建议。 为什么我更喜欢我的解决方案? 此方法检查鼠标是否在您所选择的任何时间停留在元素上。 Mouseenter和:hover很酷，但是Mouseenter只在你移动鼠标时触发，而不是当元素在鼠标下移动时触发。 :盘旋很可爱，但是…即

所以我这样做:

没有1。每次鼠标移动时，存储鼠标x, y位置， 没有2。检查鼠标是否在任何匹配查询的元素上…比如触发mouseenter事件

// define mouse x, y variables so they are traced all the time
var mx = 0; //  mouse X position
var my = 0; //  mouse Y position

// update mouse x, y coordinates every time user moves the mouse
$(document).mousemove(function(e){
    mx = e.pageX;
    my = e.pageY;
});

// check is mouse is over an element at any time You need (wrap it in function if You need to)
$("#my_element").each(function(){
    boxX = $(this).offset().left;
    boxY = $(this).offset().top;
    boxW = $(this).innerWidth();
    boxH = $(this).innerHeight();
    if ((boxX <= mx) &&
        (boxX + 1000 >= mx) &&
        (boxY <= my) &&
        (boxY + boxH >= my))
    {
        // mouse is over it so you can for example trigger a mouseenter event
        $(this).trigger("mouseenter");
    }
});

扩展什么'Happytime harry'说，一定要使用.data() jquery函数来存储超时id。这样，当'mouseenter'在同一个元素上被触发时，你可以很容易地检索超时id，允许你消除触发，让你的工具提示消失。

You can test with jQuery if any child div has a certain class. Then by applying that class when you mouse over and out out a certain div, you can test whether your mouse is over it, even when you mouse over a different element on the page Much less code this way. I used this because I had spaces between divs in a pop-up, and I only wanted to close the pop up when I moved off of the pop up, not when I was moving my mouse over the spaces in the pop up. So I called a mouseover function on the content div (which the pop up was over), but it would only trigger the close function when I moused-over the content div, AND was outside the pop up!

$(".pop-up").mouseover(function(e)
    {
    $(this).addClass("over");
    });

$(".pop-up").mouseout(function(e)
    {
    $(this).removeClass("over");
    });


$("#mainContent").mouseover(function(e){
            if (!$(".expanded").hasClass("over")) {
            Drupal.dhtmlMenu.toggleMenu($(".expanded"));
        }
    });

这段代码说明了我和harry想要表达的意思。当鼠标进入时，会出现一个工具提示，当鼠标离开时，它会为工具提示的消失设置一个延迟。如果鼠标在触发延迟之前输入了相同的元素，那么我们使用之前存储的数据在触发器触发之前销毁它。

$("someelement").mouseenter(function(){
    clearTimeout($(this).data('timeoutId'));
    $(this).find(".tooltip").fadeIn("slow");
}).mouseleave(function(){
    var someElement = $(this),
        timeoutId = setTimeout(function(){
            someElement.find(".tooltip").fadeOut("slow");
        }, 650);
    //set the timeoutId, allowing us to clear this trigger if the mouse comes back over
    someElement.data('timeoutId', timeoutId); 
});

一个干净优雅的悬停检查:

if ($('#element:hover').length != 0) {
    // do something ;)
}