JavaScript / HTML5のニュース

ガントチャートを使用してタイムクリティカルなタスクを調整

7月 1, 2025
ガントチャートは、タスクを経時的にマッピングし、チームがスケジュールを管理し、競合を特定し、複雑なプロジェクトタイムライン全体の可視性を維持可能

A Gantt chart is a visual project management tool that displays tasks or activities along a timeline, allowing teams to see the start and end dates, duration, and dependencies of each task within a project. Typically represented as horizontal bars across a calendar-based axis, Gantt charts provide a clear overview of project progress and help identify potential bottlenecks or scheduling conflicts. Gantt charts improve planning, scheduling, team coordination, and stakeholder transparency by clearly organizing tasks and timelines. They are especially valuable in complex projects, offering both macro and micro views to support informed decision-making and efficient execution.

Several JavaScript chart controls provide Gantt charts including:

  • AnyGantt JS by AnyChart allows you to build feature-rich Gantt charts for project tracking, including task grouping, critical paths, and interactive controls.
  • FusionCharts Suite XT lets you create interactive Gantt charts that visualize task timelines, dependencies, and progress with rich, customizable styling.
  • Syncfusion JavaScript Chart (part of Syncfusion Essential Studio Enterprise) provides dynamic Gantt chart support with drag-and-drop scheduling and real-time task updates.
  • DevExtreme Chart (part of DevExtreme Complete by DevExpress) facilitates Gantt chart rendering, enabling task planning with milestone tracking and zoomable time scales.

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

Compare JavaScript Chart Controls

スクロール時にグリッド行を動的にレンダリング

6月 30, 2025
仮想スクロールと無限スクロールを使用して、表示されるコンテンツを動的にレンダリングし、JavaScriptアプリケーションのデータグリッドの性能が向上

The ability to load items in a data grid as you scroll is a technique where content is rendered or fetched dynamically based on the user’s scroll position. Its purpose is to improve performance, and ultimately the user experience, when dealing with large datasets. This includes virtual scrolling, where the grid only renders rows that are currently visible in the viewport and reuses those same DOM elements as the user scrolls, and infinite scrolling (also known as endless scrolling), where additional data is loaded from a remote source in response to reaching the end of the currently displayed dataset. By minimizing the amount of data rendered or retrieved at any one time, this approach significantly reduces initial load times, improves responsiveness, and allows applications to scale efficiently.

Several JavaScript grid components allow you to load items as the user scrolls, including:

  • DevExtreme HTML5 JavaScript Data Grid (part of DevExtreme by DevExpress) supports both virtual and infinite scrolling to optimize data loading performance.
  • KendoReact Data Grid (part of KendoReact by Telerik) offers customizable column/row virtualization and virtual scrolling, dynamically requesting data as needed.
  • Sencha Ext JS Grid (part of Sencha Ext JS) implements infinite scrolling through a virtualized system that loads data on demand without traditional pagination.
  • Syncfusion DataGrid for JavaScript (part of Syncfusion Essential Studio Enterprise) allows both virtualization and infinite scrolling for responsive grid rendering.

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

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プラットフォーム間でダイアグラムファイルをネイティブに表示

6月 25, 2025
ONLYOFFICE Docs v9.0は、マルチプラットフォームをサポートする統合ダイアグラムビューアを追加し、ユーザーがMicrosoft Visioファイルを開いてナビゲート可能

ONLYOFFICE Docs is a comprehensive online editor, allowing users to create text documents, spreadsheets, presentations, and forms. It enables your users to edit, share, and collaborate on documents online in their preferred browser, within your own application. It is fully compatible with OOXML (Office Open XML) formats and supports popular Microsoft Office and other document formats such as CSV, DOC, DOCX, EPUB, HTML, ODP, ODS, ODT, PDF, PPT, PPTX, RTF, TXT, XLS, and XLSX.

The ONLYOFFICE Docs v9.0 update adds a multi-platform integrated Diagram Viewer tool that allows users to view and navigate Microsoft Visio (.vsdx) files natively across devices, on web, desktop, and mobile web platforms, without requiring third-party software. With intuitive controls, zooming and panning, it provides effortless navigation whilst visualizing ideas and workflows as diagrams. Whether an IT manager is mapping infrastructure or a student is presenting a flowchart, the viewer ensures ideas and systems are clearly communicated.

To see a full list of what's new in v9.0.0, see our release notes.

ONLYOFFICE Docs is licensed by the number of simultaneous document connections and is available as an annual license with 1 year support and upgrades. See our ONLYOFFICE Docs licensing page for full details.

For more information, see our ONLYOFFICE Docs product page.

Vue.jsアプリケーションでチャートをアニメーション化

6月 24, 2025
アニメーションを使用すると、開発者はデータの理解と解釈を容易にする、より魅力的なグラフを作成可能

Animation in charts is a feature used in data visualization to visually transition between different data states or configurations. This technique helps communicate changes in data over time or between user interactions in a smooth, progressive manner. Rather than instantly switching from one state to another, animation introduces motion that can guide users’ attention, reinforce patterns, and reduce confusion. It is particularly useful in interactive dashboards and real-time analytics, where users benefit from a clearer understanding of what has changed and how.

Several Vue.js charting components support the use of animations, including:

  • DevExtreme Chart (part of DevExtreme by DevExpress) offers high-performance Vue components for data visualization that integrate configurable animation options.
  • Wijmo FlexChart and FinancialChart (part of Wijmo by MESCIUS) incorporates various animation modes and timing controls for visualizing data in web applications.
  • Highcharts Core by Highsoft is a JavaScript charting library that can equip Vue.js apps with advanced animation functionality for highlighting data and aiding data interpretation.
  • Kendo UI for Vue Chart (part of Kendo UI by Telerik) features built-in animations that respond to data changes in real-time, creating engaging transitions by default.

For an in-depth analysis of features and price, visit our comparison of Vue.js chart components.

Compare Vue.js Chart Controls

スプレッドシート同期によるリアルタイムのコラボレーション

6月 24, 2025
SpreadJSは、競合のない編集を実現するモジュラーコラボレーションフレームワークを使用して、JavaScriptアプリケーションでのシームレスなリアルタイム共同編集を可能に

SpreadJS is a high-performance JavaScript spreadsheet and data presentation component designed for enterprise web applications. It enables developers to deliver Excel-like functionality directly within their web solutions, providing advanced features such as data binding, complex calculations, pivot tables, charts, and extensive formatting options. Fully compatible with modern JavaScript frameworks like React, Angular, and Vue, SpreadJS allows seamless integration and customization, empowering development teams to create interactive, data-driven user experiences without relying on external spreadsheet applications.

SpreadJS enables real-time collaboration within JavaScript spreadsheet applications through a modular, extensible framework currently available as a Developer Preview. This feature allows multiple users to work on the same spreadsheet simultaneously, maintaining data consistency and reducing the complexity of building collaborative functionality from scratch. It supports low-latency data synchronization, user presence indicators, and conflict-free concurrent editing, allowing multiple users to work simultaneously while maintaining consistent data states. Designed to integrate with various document types and backend systems, it simplifies the development of collaborative features without requiring developers to build the infrastructure from scratch. An online collaboration demo is available to explore these capabilities in action.

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.