This parameter indicates the execution result of previous plugins when the current event is executed serially across multiple plugins.

An event may be listened to and processed by multiple plugins. This parameter contains the execution result of previous plugins, which is very important in some scenarios.

• For example, when processing floating-layer components, you need to get all floating-layer components that have already been registered.

  const fixedComponents = (pluginExecResult.preData&&pluginExecResult.preData.fixedComponents) || []