Reactのニュース

リアルタイムのスプレッドシートコラボレーションを可能に

12月 19, 2025
SpreadJS 19は、複数のユーザーが同時に同じスプレッドシートを編集できる新しいサーバーアドオンにより、共同作業を追加サポート

SpreadJS is a JavaScript spreadsheet and data visualization component built to deliver Excel-compatible functionality within web applications. It provides a flexible, high-performance interface for displaying and manipulating tabular data, supporting advanced features such as formulas, pivot tables, charts, conditional formatting, and data binding. SpreadJS integrates smoothly with popular frameworks like React, Angular, and Vue, and includes robust import and export capabilities for Microsoft Excel files. It is commonly used in enterprise applications where users need a responsive, interactive spreadsheet experience directly in the browser.

The SpreadJS 19.0.0 update introduces a new Collaboration Server Add‑on that enables real‑time, multi‑user editing of the same spreadsheet within web applications by integrating the collaboration framework and server infrastructure directly into SpreadJS. This add‑on lets developers build functionality where multiple clients see and apply changes instantly to workbook data with consistent state across users, supports conflict‑free concurrent edits using Operational Transformation logic, and includes features such as live user presence and permission controls.

To see a full list of what's new in 19.0.0, see our release notes.

SpreadJS is licensed per developer and includes 1 Year Maintenance (major and minor version releases and unlimited support phone calls). SpreadJS requires an Annual or Perpetual Deployment License. The optional Add-ons are available at an additional cost, and require a SpreadJS license. See our SpreadJS licensing page for full details.

For more information, visit our SpreadJS product page.

仮想スクロールで大規模データグリッドを最適化

12月 17, 2025
ユーザーが見えるものだけをレンダリングすることで、速度を最大化し、メモリ使用を減らし、どのスケールでもグリッドの相互作用を滑らかに保持

Virtual scroll support in a grid component is a rendering strategy that displays only the rows and columns currently visible in the viewport while dynamically loading and unloading data as the user scrolls. It minimizes DOM size and memory usage by avoiding the creation of off-screen elements, which improves rendering speed, reduces layout thrashing, and maintains smooth interaction even with very large datasets. This approach enables grids to handle millions of records efficiently without requiring pagination, lowers CPU and GPU load, and delivers consistent performance across a wide range of devices.

Several React grid controls offer virtual scroll capability including:

  • DevExtreme React Data Grid (part of DevExtreme Complete by DevExpress) lets you render only visible records offering excellent performance for displaying thousands of data rows.
  • KendoReact Data Grid (part of KendoReact by Telerik) allows you to virtualize grid content for rapid scrolling and reduced DOM overhead with large datasets.
  • Wijmo React DataGrid (FlexGrid) (part of Wijmo by MESCIUS) facilitates virtual scrolling that loads data on demand, minimizing rendering work and preserving fluid navigation.
  • Infragistics Ignite UI for React Data Grid (part of Infragistics Ignite UI) enables row and column virtualization to significantly boost performance for large datasets.

For an in-depth analysis of features and price, visit our React grid controls comparison.

Compare React Grid Controls

大ボリュームのレンダリングによるスケールスプレッドシート

12月 12, 2025
Jspreadsheet Pro v12は拡張ビューポートレンダリングでパフォーマンスを最適化し、大規模なスプレッドシートがレスポンシブでスケーラブルであることを保証

Jspreadsheet Pro is a flexible JavaScript-based spreadsheet solution that enables developers to create customizable, feature-rich data grids for web applications. It offers advanced formulas, data validation, and API integrations. Ideal for tasks like financial modeling, inventory management, and project tracking, it helps businesses efficiently manage and analyze data. Its backend server integration supports real-time data processing, enhancing workflows and boosting productivity across various industries.

The Jspreadsheet Pro v12 update improves handling of large datasets by introducing an extended viewport with optimized rendering that processes only the visible portion of the spreadsheet. This enhancement reduces memory usage, maintains interface responsiveness, and enables smooth interaction even when working with very large or complex data structures. It provides developers with a more scalable foundation for building applications that require high-performance spreadsheet capabilities without compromising speed or usability.

To see a full list of what's new in version 12, see our release notes.

Jspreadsheet Pro is licensed as an Annual or a Perpetual License with support and maintenance. We can supply any Jspreadsheet Pro license including new licenses, maintenance renewals, and upgrade licenses. See our Jspreadsheet Pro for full details.

For more information, visit our Jspreadsheet Pro product page.

WPF用の2D等高線チャートで3Dデータを可視化

12月 12, 2025
ComponentOne Studio Enterprise 2025 v2は、高性能な輪郭マッピングとグラデーション可視化機能でWPFアプリを強化

ComponentOne Studio Enterprise is a comprehensive suite of .NET UI controls developed by MESCIUS (formerly GrapeCity) designed for building rich, interactive desktop, web, and mobile applications. It provides developers with a broad range of tools and components-including data grids, charts, reports, input controls, and advanced data visualization features-for platforms such as WinForms, WPF, ASP.NET Core, Blazor, WinUI, and .NET MAUI. The suite emphasizes performance, flexibility, and ease of integration, helping teams create consistent, feature-rich user experiences across multiple application types while maintaining a unified development approach.

The ComponentOne Studio Enterprise 2025 v2 update introduces 2D Contour Charts in FlexChart for WPF, allowing developers to represent three-dimensional data on a two-dimensional surface through contour lines or shaded bands that highlight areas of equal value. This capability delivers a clear visual understanding of gradients, surface characteristics, and other continuous data patterns. With support for multiple contour types, customizable contour levels, and flexible gradient color palettes, developers gain precise control over how value transitions are presented. These enhancements make the WPF contour chart well suited for scientific and engineering analysis, elevation and surface mapping, and any application that requires accurate comparison of value distribution across two variables.

To see a full list of what's new in 2025 v2, see our release notes.

ComponentOne Studio Enterprise is licensed per developer on a perpetual basis and includes a 12 month subscription. Priority Support is also available. See our ComponentOne Studio Enterprise licensing page for full details.

Learn more on our ComponentOne Studio Enterprise product page.

セルベースレポートによるExcel対応のレイアウト設計

12月 10, 2025
ActiveReportsJS v6.0のセルベースデザインモード導入による、より精密なレイアウトとExcelエクスポート構造の強化

ActiveReportsJS by MESCIUS is a JavaScript reporting toolkit that allows developers to design and embed interactive reports within web applications. It includes a standalone report designer for building reports visually and a JavaScript report viewer component that integrates with web frameworks such as React or vanilla JavaScript. The toolkit supports a range of data visualization options and export formats, helping developers deliver rich, interactive reporting capabilities in the browser.

The ActiveReportsJS v6.0 update introduces a new cell-based layout mode that provides precise control over the alignment and structure of report elements using a grid of cells. This layout mirrors the structure of spreadsheets, making it particularly effective for generating reports intended for export to Microsoft Excel. It helps minimize layout inconsistencies and fragmented cells, ensuring a clean and predictable structure for exported files. Developers benefit from a more consistent and data-oriented layout approach, especially in scenarios where structural accuracy is critical.

To see a full list of what's new in 6.0, see our release notes.

ActiveReportsJS is licensed on an annual subscription or perpetual basis and is available as a Single Deployment License for non-commercial use, and as a Single Domain License or Unlimited Domain License for commercial and/or SaaS use. See our ActiveReportsJS licensing page for full details.

Learn more on our ActiveReportsJS product page.