您当前查看的是 JSAPI 3.0 历史版本文档。该版本仅用于维护现有项目，不建议用于新项目开发。新项目请使用 JSAPI 4.0，如需升级现有项目，请参考升级指南。
You are viewing the legacy JSAPI 3.0 documentation. This version is maintained for existing projects only and is not recommended for new development. For new projects, use the JSAPI 4.0 documentation. If you are upgrading an existing project, please refer to the Migration Guide.