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filePath: [zh/ui-system/components/editor/scrollview.md](https://github.com/cocos/cocos-docs/blob/master/versions/3.8/zh/ui-system/components/editor/scrollview.md) callback(scrollview, eventType, customEventData){} eventType是数字，不是字符串 得先定义let ScrollViewEventMap = [ "scroll-to-top", "scroll-to-bottom", "scroll-to-left", "scroll-to-right", "scrolling", "bounce-top", "bounce-bottom", "bounce-left", "bounce-right", "scroll-ended", "touch-up", "scroll-ended-with-threshold", "scroll-began", ] ScrollViewEventMap[eventType] = ScrollView.EventType.xxx