我有一些HTML菜单,当用户单击这些菜单的头部时,我会完全显示这些菜单。当用户在菜单区域外单击时,我希望隐藏这些元素。

jQuery是否可以实现这样的功能?

$("#menuscontainer").clickOutsideThisElement(function() {
    // Hide the menus
});

当前回答

假设您想要检测用户在外部或内部单击的div是否具有id,例如:“我的特殊小部件”。

收听身体点击事件:

document.body.addEventListener('click', (e) => {
    if (isInsideMySpecialWidget(e.target, "my-special-widget")) {
        console.log("user clicked INSIDE the widget");
    }
    console.log("user clicked OUTSIDE the widget");
});

function isInsideMySpecialWidget(elem, mySpecialWidgetId){
    while (elem.parentElement) {
        if (elem.id === mySpecialWidgetId) {
            return true;
        }
        elem = elem.parentElement;
    }
    return false;
}

在这种情况下,您不会破坏页面中某些元素的正常点击流,因为您没有使用“stopPropagation”方法。

其他回答

外部点击插件!

用法:

$('.target-element').outsideClick(function(event){
    //code that fires when user clicks outside the element
    //event = the click event
    //$(this) = the '.target-element' that is firing this function 
}, '.excluded-element')

它的代码:

(function($) {

//when the user hits the escape key, it will trigger all outsideClick functions
$(document).on("keyup", function (e) {
    if (e.which == 27) $('body').click(); //escape key
});

//The actual plugin
$.fn.outsideClick = function(callback, exclusions) {
    var subject = this;

    //test if exclusions have been set
    var hasExclusions = typeof exclusions !== 'undefined';

    //switches click event with touch event if on a touch device
    var ClickOrTouchEvent = "ontouchend" in document ? "touchend" : "click";

    $('body').on(ClickOrTouchEvent, function(event) {
        //click target does not contain subject as a parent
        var clickedOutside = !$(event.target).closest(subject).length;

        //click target was on one of the excluded elements
        var clickedExclusion = $(event.target).closest(exclusions).length;

        var testSuccessful;

        if (hasExclusions) {
            testSuccessful = clickedOutside && !clickedExclusion;
        } else {
            testSuccessful = clickedOutside;
        }

        if(testSuccessful) {
            callback.call(subject, event);
        }
    });

    return this;
};

}(jQuery));

根据此答案改编https://stackoverflow.com/a/3028037/1611058

注意:应该避免使用stopPropagation,因为它会破坏DOM中的正常事件流。有关更多信息,请参阅这篇CSS技巧文章。请考虑改用此方法。

将单击事件附加到关闭窗口的文档正文。将一个单独的单击事件附加到容器,以停止传播到文档正文。

$(window).click(function() {
  //Hide the menus if visible
});

$('#menucontainer').click(function(event){
  event.stopPropagation();
});

如果您正在为IE和FF 3.*编写脚本,并且您只想知道单击是否发生在某个框区域内,您也可以使用以下内容:

this.outsideElementClick=函数(objEvent,objElement){var objCurrentElement=objEvent.target | | objEvent.srcElement;var blnSideX=false;var blnSideY=false;如果(objCurrentElement.getBoundingClientRect().left>=objElement.getBoundingClientRect().left&&objCurrentElement.getBoundingClientRectblnSideX=真;如果(objCurrentElement.getBoundingClientRect().top>=objElement.getBoundingClientRect().ttop&&objCurrentElement.getBoundingClientRectblnSideY=真;如果(blnSideX&&blnSideY)return false;其他的返回true;}

$("html").click(function(){
    if($('#info').css("opacity")>0.9) {
        $('#info').fadeOut('fast');
    }
});

单击元素时,这将切换导航菜单。

$(document).on('click',函数(e){var elem=$(e.target).最近('#menu'),box=$(e.target).最近('#nav');if(元素长度){e.预防违约();$('#nav').tggle();}否则如果(!box.length){$('#nav').hide();}});<script src=“https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js“></script><li id=“menu”><a></a></li><ul id=“nav”><!--单击菜单时,导航将切换(在本例中它可以是一个图标)--><li class=“page”><a>第1页</a></li><li class=“page”><a>第2页</a></li><li class=“page”><a>第3页</a></li><li class=“page”><a>第4页</a></li></ul>