jquery 全反选实现插件详解编程语言

/* 
 * selectToDo - jQuery plugin for select checkbox 
 * 
 * Copyright (c) 2014 Elric Huang 
 * 
 * Licensed under the MIT license: 
 *   http://www.opensource.org/licenses/mit-license.php 
 * 
 * Project home: 
 *   https://github.com/elrichuang/jquery.selectToDo.js 
 * 
 * Version:  0.1.3 
 * 
 */ 
;(function ($){ 
    $.fn.selectToDo = function (options){ 
        var settings = $.extend({},{ 
            "selectAllButton"    : $("#selectAll"), 
            "selectNoneButton"   : $("#selectNone"), 
            "selectInvertButton" : $("#selectInv"), 
        }, options); 
          
        var element = this; 
          
        $(settings.selectAllButton).bind("click",function(){ 
            element.selectAll(); 
        }); 
        $(settings.selectNoneButton).bind("click",function(){ 
            element.selectNone(); 
        }); 
        $(settings.selectInvertButton).bind("click",function(){ 
            element.selectInvert(); 
        }); 
          
        this.selectAll = function(){//全选 
            element.prop('checked', true); 
        }; 
          
        this.selectNone = function(){//全不选 
            element.prop('checked', false); 
        }; 
          
        this.selectInvert = function(){//反选 
            element.each(function(){ 
                if(this.checked){ 
                    $(this).prop('checked', false); 
                }else{ 
                    $(this).prop('checked', true); 
                } 
            }); 
        }; 
          
        this.result = function(){ 
            var checkVal=[]; 
            element.each(function(){ 
                if(this.checked){ 
                    checkVal.push($(this).val()); 
                } 
            }); 
            if(checkVal.length > 0) 
            { 
                // 引用回调函数 
                return checkVal.join(","); 
            }else{ 
                return null; 
            } 
        }; 
          
        return this; 
    }; 
})(jQuery);