使用集合让一切井井有条
根据您的偏好保存内容并对其进行分类。
blockly >滚动条 >updateDisplay_
根据滚动条是否应该可见以及其所在的工作区是否可见,更新滚动条的可见性。我们不能依赖包含的工作区将我们隐藏起来,因为它未必是 DOM 中的父级。
Signature:
updateDisplay_(): void;
返回:
void
如未另行说明,那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可,并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情,请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
最后更新时间 (UTC):2025-07-25。
[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["没有我需要的信息","missingTheInformationINeed","thumb-down"],["太复杂/步骤太多","tooComplicatedTooManySteps","thumb-down"],["内容需要更新","outOfDate","thumb-down"],["翻译问题","translationIssue","thumb-down"],["示例/代码问题","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC):2025-07-25。"],[],["The `updateDisplay_` method in the Scrollbar class controls the scrollbar's visibility. It determines if the scrollbar should be shown by assessing its own state and the visibility of the containing workspace. The method's logic doesn't rely solely on the workspace's parent-child DOM relationship for visibility decisions. It takes no arguments and returns nothing (void). The method's core function is to synchronize the scrollbar's display state with the workspace's current state.\n"]]