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blockly >屏蔽 >onchange
Block.onchange 属性
每当块的父工作区发生更改时,使用的回调方法。这通常仅从构造函数、块类型 initializer 函数或扩展 initializer 函数调用。
Signature:
onchange?: ((p1: Abstract) => void) | null;
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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 `Block.onchange` property is an optional callback function triggered when a block's parent workspace is modified. It's typically set within the block's constructor, type initializer, or extension initializer. This callback, accepting an `Abstract` parameter, allows for custom actions in response to workspace changes. It can also be set to `null`.\n"]]