/*** JS全选* @class Checkall* @param {Object} cfg* @param {Element|selector} [cfg.container] 限定全选的容器* @param {selector} cfg.checkAll 全选框* @param {selector} cfg.checkItem 子选框*/function CheckAll(cfg,callback) {var self = this;this.config = cfg;this.container = $(cfg.container) || document.body;// 全选自定义事件this.container.delegate(cfg.checkAll,'change',function(e){$(e.target).trigger('checkAllChange');});// 单选自定义事件this.container.delegate(cfg.checkItem,'change',function(e){$(e.target).trigger('checkItemChange');});// 全选操作this.container.delegate(cfg.checkAll,'checkAllChange',function(e){var checked = self.isItemChecked(e.target);self._checkAll(checked);// 选中所有子节点
        self._AllChildrenChecked(checked);callback && $.isFunction(callback) && callback(self);});// 单选操作this.container.delegate(cfg.checkItem,'checkItemChange',function(e){// 检查是否所有子节点都选中了if( self._isChildrenChecked()){self._checkAll(true);}else {self._checkAll(false);}callback && $.isFunction(callback) && callback(self);});};$.extend(CheckAll.prototype,{/** 选中单个checkbox* @param item* @param _isCheck*/_checkItem: function(item, _isCheck ){item = $(item);item.prop('checked', _isCheck);},/** 选中/反选所有的 全选按钮* @method _checkAll {private}* @param {Boolean} _isCheck*/_checkAll: function(_isCheck){var self = this;this.container.find(self.config.checkAll).each(function(index,item){var isAllChecked = self.isItemChecked(item);if(isAllChecked !== _isCheck) {self._checkItem(item,_isCheck);}});},/** 选中/反选 所有的子节点* @method _AllChildrenChecked {private}*/_AllChildrenChecked: function(_isCheck){var self = this;this.container.find(this.config.checkItem).each(function(index,item){var itemChecked = self.isItemChecked(item);if( itemChecked !== _isCheck){self._checkItem(item, _isCheck);}});},/** 是否所有的子节点都选中了*/_isChildrenChecked: function(){var isCheckAll = true;var self = this;this.container.find(this.config.checkItem).each(function(index,item){if(!self.isItemChecked(item)) {isCheckAll = false;}});return isCheckAll;},/** 检查一个元素是否被选中*/isItemChecked: function(item) {return $(item).is(":checked");},/** 获取被选中的所有值 或者 属性 存入数组* @todo 比如想获取选中所有项的id或者其他所有项的属性等操作* @method getValues {public} * @param {elems,attr} 元素所有的dom节点 获取元素对应的属性值* @return 返回数组 {rets}*/getValues: function(elems,attr) {var self = this,rets = [];$(elems).each(function(index,item){var isboolean = self.isItemChecked(item);if(isboolean && $(item).prop(attr)) {var curAttr = $(item).prop(attr);rets.push(curAttr);}});return rets;}});

<div class="check-list"><hr><div class="J_CheckListContainerBasic"><h4>基本使用</h4><div class="check-all"><label>全选 <input type="checkbox" class="J_CheckAll"></label><ul class="sub-checkbox"><li><label>选中 <input type="checkbox" class="J_CheckItem" value="1"></label></li><li><label>选中 <input type="checkbox" class="J_CheckItem" value="2"></label></li><li><label>选中 <input type="checkbox" class="J_CheckItem" value="3"></label></li></ul></div></div>
</div>

var checkAll=  new CheckAll({container: '.J_CheckListContainerBasic',checkAll: '.J_CheckAll',checkItem: '.J_CheckItem'},function(){console.log(checkAll.getValues('.J_CheckItem',"value"));});