* 获取文件扩展名 * @return string */

* Returns the offset parent of the given element * @method * @memberof Popper.Utils * @argument {Element} element * @returns {Element} offset pare

* 获取鼠标与当前单元格的相对位置 * @param ele * @param mousePos

* 处理日期序列化时的补零 * @private

* Adds event handler to the target object. * @param {Object} obj Target object. * @param {String} type Name of the event. * @param {F

* Set a box attribute, or defer it if the box is not yet created * @param {Object} key * @param {Object} value

* Looks for a child or parent node which has specified classname. * Equivalent to jQuery's $(container).find(".className") * @param {Element

* Generates HTML ID for the highlighter. * @param {String} highlighterId Highlighter ID. * @return {String} Returns HTML ID.

* Executes given regular expression on provided code and returns all * matches that are found. * * @param {String} code Code to exec

* Get the opposite placement of the given one * @method * @memberof Popper.Utils * @argument {String} placement * @returns {String} flipped placem

* Returns the scrolling parent of the given element * @method * @memberof Popper.Utils * @argument {Element} element * @returns {Element} scroll p