是否有一个快速和简单的方法来做到这一点在jQuery,我错过了?

我不想使用鼠标悬停事件,因为我已经将它用于其他事情。我只需要知道鼠标在给定时刻是否在某个元素上。

我想做一些这样的事情,如果有一个“IsMouseOver”函数:

function hideTip(oi) {
    setTimeout(function() { if (!IsMouseOver(oi)) $(oi).fadeOut(); }, 100);
}

当前回答

For those like me who needed an answer that didn't depend on browser mouse-over/enter/leave events or hover states. I had a situation in a home-page slider, the left and right slide click areas could overlap (or sometimes completely cover) the CTA buttons in the banner - this renders all those previous methods useless (browser only reports events on the element with the highest z-index). I was tasked with making the click event care more about the button than the banner functionality when the click is over the button.

我的完整解是这样的:

jQuery('.carousel-control-prev').on('click.testClick', function(e) {
    var bannerButtons = jQuery('.banner-content a');
    for (var i = 0; i < bannerButtons.length; i++) {
        if (isMouseOver(bannerButtons.eq(i), e)) {
            e.preventDefault();
            e.stopPropagation();
            bannerButtons[i].click();
        }
    }
});

function isMouseOver($el, e) {
    if ($el.is(':visible')) {
        var offset = $el.offset();
        var x = (e.pageX - offset.left);
        var y = (e.pageY - offset.top);
        if (x > 0 && x < $el.outerWidth() && y > 0 && y < $el.outerHeight()) {
            return true;
        }
    }
    return false;
}

这可能需要更多的工作和测试,但现在它做了我需要的-在这种情况下是拦截横幅左键点击,检查鼠标是否恰好在CTA按钮上,如果是,点击CTA而不是横幅导航。

我完全理解更好的解决方案是重新设计横幅区域,这样就不会发生这种情况,但设计超出了我的控制范围。

其他回答

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); 
});

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"));
        }
    });

警告:is(':hover')在jquery 1.8+中已弃用。请参阅这篇文章以获得解决方案。

你也可以使用这个答案:https://stackoverflow.com/a/6035278/8843来测试鼠标是否悬停在一个元素上:

$('#test').click(function() {
    if ($('#hello').is(':hover')) {
        alert('hello');
    }
});

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。

这里有一个技术,它不依赖于jquery,并使用本机DOM匹配API。它使用厂商前缀支持回到IE9的浏览器。详情请参阅caniuse.com上的matchesselector。

首先创建matchesSelector函数,如下所示:

var matchesSelector = (function(ElementPrototype) {
var fn = ElementPrototype.matches ||
          ElementPrototype.webkitMatchesSelector ||
          ElementPrototype.mozMatchesSelector ||
          ElementPrototype.msMatchesSelector;

return function(element, selector) {
  return fn.call(element, selector);
};

})(Element.prototype);

然后,检测悬停:

var mouseIsOver = matchesSelector(element, ':hover');