* contains returns a boolean for if substr is found within str.

通过星数获取评论数 @param score 评分 @param goodsId 商品编号 @return 评论数

* simple class inheritance * @param {Function} child * @param {Function} base * @param {Object} [pr

* Support testing using an element * @param {Function} fn Passed the created div and expects a boolean result

* Fix JS round off float errors * @param {Number} num

* Discard an element by moving it to the bin and delete * @param {Object} The HTML node to discard

* Remove last occurence of an item from an array * @param {Array} arr * @param {Mixed} item

* Check if an element is an array, and if not, make it into an array. Like * MooTools' $.splat.

* Support testing using an element * @param {Function} fn Passed the created element and returns a boolean result