在全局可访问的插件中制作一个方法？

Question

鉴于下面的jQuery下拉插件。有没有办法添加一个方法，允许在'hideMenu'的下拉菜单之外使用单独的函数？由于

例如，如果我申请的插件一个div像这样的ID：

$('#settings.dropdown').dropDownMenu(); 

我怎么能然后调用从插件以外关闭dropDownMenuW¯¯hideMenu？谢谢

jQuery.fn.dropDownMenu = function() { 

    // Apply the Dropdown 
    return this.each(function() { 

     var dropdown = $(this), 
      menu = dropdown.next('div.dropdown-menu'), 
      parent = dropdown.parent(); 

     // For keeping track of what's "open" 
     var activeClass = 'dropdown-active', 
      showingDropdown = false, 
      showingMenu, 
      showingParent, 
      opening; 

     // Dropdown Click to Open 
     dropdown.click(function(e) { 

      opening = true; // Track opening so that the body click doesn't close. This allows other js views to bind to the click 
      e.preventDefault(); 

      if (showingDropdown) { 
       dropdown.removeClass(activeClass); 
       parent.removeClass(activeClass); 
       showingMenu.hide(); 
       showingDropdown = false; 
      } else { 
       showingDropdown = true; 
       showingMenu = menu; 
       showingParent = parent; 
       menu.show(); 
       dropdown.addClass(activeClass); 
       parent.addClass(activeClass); 
      } 
     }); 

     // When you click anywhere on the page, we detect if we need to blur the Dropdown Menu 
     $('body').click(function(e) {  
      if (!opening && showingParent) { 
       var parentElement = showingParent[0]; 

       if (!$.contains(parentElement, e.target) || !parentElement == e.target) { 
        hideMenu(); 
       } 
      } 

      opening = false; 

     }); 

     // hides the current menu 
     var hideMenu = function() { 
      if(showingDropdown) { 
       showingDropdown = false; 
       dropdown.removeClass(activeClass); 
       parent.removeClass(activeClass); 
       showingMenu.hide(); 
      } 
     }; 

    }); 

}; 

Answer 1

jQuery的建议使得可通过插件本身多种方法：

jQuery.fn.dropDownMenu = function(method) { 

    var methods = { 
     init: function() { 
      // Put all your init code here 
     }, 
     hide: function() { 
      hideMenu(); 
     } 
    }; 

    if (methods[method]) { 
     return methods[ method ].apply(this, Array.prototype.slice.call(arguments, 1)); 
    } else if (typeof method === 'object' || ! method) { 
     return methods.init.apply(this, arguments); 
    } else { 
     $.error('Method ' + method + ' does not exist on jQuery.tooltip'); 
    } 

    function hideMenu() { 
     // ... 
    } 

}; 

见http://docs.jquery.com/Plugins/Authoring#Plugin_Methods

更新：使用这样的：

// Use the plugin normally to run the init method 
$('#settings.dropdown').dropDownMenu(); 

// Call the hide method 
$('#settings.dropdown').dropDownMenu('hide'); 

Answer 2

当然。给hideMenu全局窗口对象，像这样：

window["hideMenu"] = function() { 
     if(showingDropdown) { 
      showingDropdown = false; 
      dropdown.removeClass(activeClass); 
      parent.removeClass(activeClass); 
      showingMenu.hide(); 
     } 
    }; 

然后你可以把它像往常一样你需要的地方。