JavaScript 滚动到指定位置后加载更多图片
###一、代码 ```javascript Waterfall.prototype.scrollAdd = function() { console.log('done'); var self = this; addEvent(window, 'scroll', function () { for (var i = 0; i < self.columnNum; i++) { if (self.columns[i].getBoundingClientRect().bottom - window.innerHeight < 0) { var picture = self.makePi...