版本：cocos2d-js-v3.0-rc1
frameworks\cocos2d-html5\extensions\ccui\uiwidgets\scroll-widget\UIListView.js
行：425
frameworks\cocos2d-html5\extensions\ccui\base-classes\UIWidget.js
行：928
行：980
frameworks\cocos2d-html5\extensions\ccui\uiwidgets\scroll-widget\UIScrollView.js
行：1476