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

我很惊讶没有人真正承认这一事件:

var button=document.getElementById('button');button.addEventListener('click',函数(e){e.target.style.backgroundColor=“绿色”;});button.addEventListener('焦点',函数(e){e.target.style.backgroundColor='';});<!DOCTYPE html><html><head><meta charset=“utf-8”></head><body><button id=“button”>单击</button></body></html>

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

我在一些jQuery日历插件中找到了这个方法。

function ClickOutsideCheck(e)
{
  var el = e.target;
  var popup = $('.popup:visible')[0];
  if (popup==undefined)
    return true;

  while (true){
    if (el == popup ) {
      return true;
    } else if (el == document) {
      $(".popup").hide();
      return false;
    } else {
      el = $(el).parent()[0];
    }
  }
};

$(document).bind('mousedown.popup', ClickOutsideCheck);

功能:

$(function() {
    $.fn.click_inout = function(clickin_handler, clickout_handler) {
        var item = this;
        var is_me = false;
        item.click(function(event) {
            clickin_handler(event);
            is_me = true;
        });
        $(document).click(function(event) {
            if (is_me) {
                is_me = false;
            } else {
                clickout_handler(event);
            }
        });
        return this;
    }
});

用法:

this.input = $('<input>')
    .click_inout(
        function(event) { me.ShowTree(event); },
        function() { me.Hide(); }
    )
    .appendTo(this.node);

功能非常简单:

ShowTree: function(event) {
    this.data_span.show();
}
Hide: function() {
    this.data_span.hide();
}

这是我的代码:

// Listen to every click
$('html').click(function(event) {
    if ( $('#mypopupmenu').is(':visible') ) {
        if (event.target.id != 'click_this_to_show_mypopupmenu') {
            $('#mypopupmenu').hide();
        }
    }
});

// Listen to selector's clicks
$('#click_this_to_show_mypopupmenu').click(function() {

  // If the menu is visible, and you clicked the selector again we need to hide
  if ( $('#mypopupmenu').is(':visible') {
      $('#mypopupmenu').hide();
      return true;
  }

  // Else we need to show the popup menu
  $('#mypopupmenu').show();
});
$("body > div:not(#dvid)").click(function (e) {
    //your code
});