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Fixed headers are a user interface element found in grids, particularly those managing large datasets. They comprise the top section of the grid, typically encompassing the row containing column labels and potentially additional rows with key information. Unlike the scrollable body of the grid, these headers remain anchored to the viewport, acting as a persistent reference point while users navigate through the data, thus improving user experience.
Several React grids support fixed headers including:
For an in-depth analysis of features and price, visit our React grids comparison.

DevExtreme Complete is a comprehensive JavaScript UI component suite developed by DevExpress. It provides a wide range of features and tools to help developers build high-performance and responsive web applications for various platforms, including traditional web, mobile, and next-generation web technologies.
The DevExtreme Complete 23.2 update brings powerful date selection options to the Calendar. You can now select single dates, multiple, or choose a date range with ease. The initial view can be set as a single date or an array, and entire weeks can be selected by clicking on the week number. These powerful new selection enhancements make date selection easier for novices and advanced users alike.
To see a full list of what's new in version 23.2, see our release notes.
DevExtreme Complete is licensed per developer and is available as a Perpetual License with a 12 month support and maintenance subscription. We can supply any DevExtreme Complete license including new subscriptions, subscription renewals, expired subscription renewals, and additional licenses. See our DevExtreme Complete licensing page for full details.
DevExtreme Complete is available to buy in the following products:

SpreadJS by MESCIUS is a powerful JavaScript library that lets you build Excel-like spreadsheets within your web applications. It offers tables, charts, formulas, pivot tables, and more, all running within the browser. It works with major frameworks like Angular, React, and Vue, and offers Excel file import and export. SpreadJS empowers developers to create interactive dashboards, analyze data, and streamline workflows, all within the familiar spreadsheet interface.
The SpreadJS 17 release introduces the optional GanttSheet Add-On, a full Gantt implementation that works inside of SpreadJS. It seamlessly integrates with your existing spreadsheets, transforming them into clear and concise Gantt charts. This allows you to visualize tasks, dependencies, and progress at a glance, identifying potential bottlenecks and adjust schedules proactively. GanttSheet offers a flexible and intuitive may to manage tasks, sort data, customize calendar settings, and even import/export plans for smooth collaboration.
To see a full list of what's new in version 17, 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 GanttSheet Add-On is available at an additional cost, and requires a SpreadJS license. See our SpreadJS licensing page for full details.
For more information, visit our SpreadJS product page.

Wijmo is a cross-platform UI JavaScript library that offers a comprehensive set of controls and tools for building rich, interactive web applications. Its components have zero dependencies and are written as lean TypeScript classes. Wijmo's key components include FlexGrid for data management, FlexChart for charting and data visualization, Input Controls for user input, and Report Viewer for creating and presenting reports.
The Wijmo 2023 v2 release brings data grouping support to FlexChart. Axis grouping helps to organize complex data by visually separating it into categories or subcategories along the axis, making it easier to identify trends, patterns, and outliers within each group. While data grouping has long been a staple of Wijmo's CollectionView, users requested similar functionality in FlexChart, which MESCIUS has now incorporated. You can bind FlexChart to a grouped CollectionView and set the 'axis.groupsOptions' property to enable grouped labels in your charts.
To see a full list of what's new in version 2023 v2, 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.
For more information, visit our Wijmo product page.

Data Validation is a crucial feature for maintaining the integrity of data within a spreadsheet. It restricts the type of data or the values that users can enter into a cell. For example, a cell can be configured to only accept dates or numbers within a certain range. This minimizes input errors and ensures that data adheres to specified parameters, which is particularly important in scenarios where spreadsheets are used for data entry by multiple users or when the data feeds into critical business processes.
Several React Spreadsheet components provide data validation support including:
For an in-depth analysis of features and price, visit our React Spreadsheet Component comparison.