JavaScript / HTML5のニュース

JavaScriptを使ってExcel XLSXをインポート/エクスポート

4月 17, 2026
このオンラインチュートリアルで、ExcelをインストールしずにSpreadJSを使ってスプレッドシートを開いたり保存したりする方法を学習

SpreadJS is a complete enterprise JavaScript spreadsheet solution used to create financial reports and dashboards, budgeting and forecasting models, scientific, engineering, healthcare, education, science lab notebooks, and other similar JavaScript business applications. Leverage the high-speed calculation engine with over 500 Excel built-in functions in 19 languages, to deliver true Excel-like spreadsheet experiences with zero dependencies on Excel.

In this online tutorial from MESCIUS, you will learn the critical steps allowing you to import/export XLSX files using JavaScript. Steps include:

  • Set up the JavaScript Spreadsheet Project
  • Add Excel import code
  • Add Excel export code
  • Include extra features, such as Charts, Shapes, and PivotTables

Detailed sample code is included to help you along the way.

View the tutorial now and get started working with spreadsheet files in your JavaScript applications.

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.

条件付き書式で重要なインサイトを強調表示

4月 16, 2026
グリッドでの条件付きフォーマットでデータの可視性を向上させ、視覚的な手がかりを使って重要なパターンや異常を浮き彫りに

Conditional formatting in grids automatically applies visual styles such as colors or icons based on defined rules, making it easier to interpret large datasets at a glance. It improves readability, highlights patterns and outliers, and supports faster, more informed decision making by surfacing key insights in real time. Common use cases include flagging budget issues in financial reports, emphasizing top performing sales data, monitoring KPIs, and drawing attention to errors or critical statuses in operational tools.

Several JavaScript grid controls offer conditional formatting, including:

  • KendoReact Data Grid (part of KendoReactby Telerik) lets you apply conditional formatting rules to style cells, highlighting trends, outliers, and key values for better insights.
  • FusionGrid by FusionCharts facilitates real time conditional formatting in large datasets, helping users quickly spot trends, exceptions, and performance indicators.
  • Handsontable by Handsoncode allows you to visually emphasize important data using conditional formatting, improving readability and enabling faster identification of patterns.
  • ZingGrid lets you customize conditional formatting rules to automatically highlight critical data points, enhancing usability and supporting faster, more informed decision making.

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

Compare JavaScript Grid Controls

Angular 21で開発を高速化

4月 10, 2026
Wijmo 2026 v1は、開発を迅速化し高度な機能を解放する統合コンポーネントを備えたAngular 21をサポート

Wijmo by MESCIUS is a comprehensive JavaScript library offering a suite of high-performance UI components and data grids specifically designed to streamline the development of modern enterprise applications. It emphasizes reduced development time and improved maintainability, along with a focus on performance through its efficient design and small module size. Wijmo integrates seamlessly with popular JavaScript frameworks like Angular, React, and Vue.js, and supports cutting-edge technologies like TypeScript, making it a versatile solution for building complex web applications.

The Wijmo 2026 v1 update introduces support for Angular 21, enabling developers to adopt the latest framework capabilities while maintaining full compatibility with Wijmo’s comprehensive component library. This support ensures smoother integration, improved application performance, and alignment with current Angular development standards. Developers can build more responsive and maintainable applications while benefiting from advanced features such as FlexGrid cell templates and a high performance Angular DataGrid, helping deliver modern user experiences more efficiently.

To see a full list of what's new in 2026 v1, see our release notes.

Wijmo is licensed per developer. Developer Licenses are perpetual and include 1 year Subscription which provides upgrades, including bug fixes and new features. See our Wijmo licensing page for full details.

Learn more on our Wijmo product page.

不要なグリッド編集を防止

4月 9, 2026
読み取り専用の列を持つJavaScriptグリッドは、開発者が固定値を守りつつ、インターフェース全体で編集ルールをより明確にすることが可能

Read-only Columns are grid columns configured to display data without allowing users to edit the values directly in the interface. In a JavaScript grid control, this is typically used for fields that should remain fixed, such as calculated values, identifiers, audit data, or information controlled by business rules or backend processes. The main benefit is that it helps preserve data integrity while still making important information visible, reduces the risk of accidental changes, supports clearer editing workflows by distinguishing editable and non-editable fields, and makes it easier for developers to enforce validation and permission requirements consistently across the application.

Several JavaScript grid controls offer support for Read-only Columns including:

  • Highcharts Grid Pro lets you configure non-editable columns for protected values, helping preserve data integrity while keeping reference fields consistently visible.
  • Kendo UI Angular Grid allows you to control column editable status, keeping selected fields read-only to enforce rules and reduce accidental changes.
  • Wijmo React DataGrid (FlexGrid) facilitates read-only column scenarios through editing controls and events, supporting protected fields and condition-based restrictions.
  • DataGridXL allows you to set columns as read-only, preventing edits to protected data while preserving fast spreadsheet-like interaction.
  • Handsontable lets you lock selected grid cells from editing, preserving displayed values while still supporting sorting, filtering, validation, and spreadsheet-style navigation.
  • JSpreadsheet Pro lets you mark columns or cells as read-only, protecting fixed values while allowing editable data elsewhere.

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

Compare JavaScript grid controls

エンタープライズアプリにQR機能を追加

4月 8, 2026
Sencha Ext JS v8.0は、複雑なウェブアプリケーション内でのデータ共有やモバイルワークフローを簡素化するために、QRコードの読み取りと生成機能を組み込み

Sencha Ext JS is an enterprise-focused JavaScript framework for building complex, data-intensive web applications, particularly business software such as dashboards, admin systems, reporting tools, and other large-scale user interfaces. It provides a broad library of prebuilt components, including grids, charts, forms, layouts, and data handling features, along with supporting tools for theming, testing, and application development, which helps teams create consistent, cross-platform applications more efficiently. In practice, Ext JS is best known for its strong support for rich user interfaces and large datasets, making it a good fit for organisations that need robust, maintainable front-end applications rather than lightweight websites.

The Sencha Ext JS v8.0 update adds QR Code Reader/Generator functionality that lets developers generate and read QR codes directly within applications across both the Modern and Classic toolkits. It supports use cases such as payments, data sharing, contact exchange, calendar events, geolocation, phone and SMS, email, and Wi-Fi configurations, while also providing rendering options including SVG, Canvas, and PNG, plus image download, clipboard copy, preview, responsive sizing, customization, and input sanitization. The result is a built-in way to add QR code barcode capabilities to enterprise applications with broad format support and flexible configuration.

To see a full list of what's new in v8.0, see our release notes.

Sencha Ext JS is available in Pro, Enterprise and Ultimate editions, as Annual Subscription Licenses. See our Sencha Ext JS licensing page for full details.

For more information, see our Sencha Ext JS product page.