JavaScript / HTML5 News

Gain More Control Over Chart Legends

August 26, 2025
LightningChart JS v8.0 introduces a fully revamped legend system with smarter defaults, flexible positioning, and enhanced customization.

LightningChart JS is a high-performance JavaScript charting library that utilizes WebGL rendering and GPU acceleration to deliver exceptional performance for a wide range of data visualization needs. It is designed to handle large datasets and complex visualizations with ease, enabling developers to create interactive and visually appealing 2D and 3D charts. Ideal for applications demanding smooth real-time data updates, such as financial platforms, engineering tools, scientific research dashboards, and industrial monitoring systems, LightningChart JS provides a comprehensive API for customization and integration into web-based projects.

The LightningChart JS v8.0 update completely reworks legend functionality, making legends a property of the chart, removing visual obstructions, and improving adaptability to available space. The API configuration is now more intuitive and capable, with built-in options supporting a wider range of use cases. Plug‑in support also enables easy extension or customization of legend behavior. By default, legends now appear automatically beneath trends, reducing developer setup time, while still allowing you to manually create multiple legends when needed. You can position legends using built-in presets or define custom placements, and control click behavior using either the provided handlers or your own. When creating series, you can also exclude specific ones from appearing in legends, giving you fine-grained control over legend content.

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

LightningChart JS is licensed per developer and is available as an annual license with 1 year support. See our LightningChart JS licensing page for full details.

For more information, see our LightningChart JS product page.

Design Reports in Vue.js with RTL Support

August 22, 2025
Using report controls that support right to left layouts, Vue.js developers can equip their reporting applications to handle RTL languages with ease.

RTL support (Right-to-Left) enables the creation and viewing of reports that can accommodate languages that are read from right to left, such as Arabic, Hebrew, Persian, Urdu, and so on. In the context of report design, this involves aligning text, tables, charts, and interface elements in a way that respects the natural reading direction of said languages, so that the report is displayed correctly for the target audience. Support for RTL languages is a key capability for developers and organizations operating in multilingual environments, ensuring users working in these languages can design, view, and interpret reports accurately and comfortably within the reporting application.

Several Vue.js reporting components include RTL support, including:

  • DevExpress Reporting offers Vue.js developers comprehensive report controls that support right-to-left layout alignment for RTL language environments.
  • ActiveReportsJS by MESCIUS lets you design and preview RTL-based reports with proper text alignment, layout orientation, and interactive viewing for RTL language users.
  • Stimulsoft Reports.JS also supports Vue.js as well as having built-in RTL rendering to ensure report content aligns as required for right-to-left languages.

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

Compare Vue.js Report Components

Improve PDF Navigation in React Applications

August 19, 2025
With thumbnail navigation users can visually locate and browse to specific pages of a PDF at speed without having to scroll or use search functions.

Thumbnail navigation is a feature often found in a PDF viewer that displays miniature representations of each page of the PDF file, typically in a side panel or dedicated section, that users can scroll through and navigate to the desired page by clicking on the relevant preview image. This functionality assists with identifying content layout and structure at a glance. By allowing users to visually scan through and select a specific page it simplifies the process of locating content at speed, especially in long or detailed files, and without having to scroll or use search functions.

Several React PDF viewer components offer thumbnail navigation, including:

  • Wijmo PDFViewer (part of Wijmo by MESCIUS) lets users preview pages as thumbnails, enabling efficient PDF navigation and quick access to specific content in React apps.
  • PrizmDoc Viewer (part of PrizmDoc by Accusoft) also supports React and facilitates fast page access with thumbnail previews, helping users identify and jump to relevant sections.
  • Syncfusion PDF Viewer (part of Syncfusion Essential Studio Enterprise) equips React apps with a lightweight PDF viewing component that supports quick navigation via thumbnails.

For an in-depth analysis of features and price, visit our comparison of React PDF viewer components.

Compare React PDF Viewer Components

Elevate Table Styling with Complete Customization

August 18, 2025
Froala Editor 4.6.0 adds advanced Table Properties modal with intuitive controls for customizing background colors, dimensions, and alignment.

Froala Editor is a JavaScript-based WYSIWYG HTML editor that empowers developers to seamlessly integrate rich text editing functionalities into their applications. Despite its extensive feature set of over 100 options, Froala prioritizes user experience through a cleverly designed toolbar. Actions are categorized into four intuitive scopes, ensuring every feature is readily accessible while maintaining a clean and uncluttered interface. This balance of power and usability makes Froala Editor a versatile solution for a wide range of content creation scenarios.

The Froala Editor 4.6.0 update introduces a highly configurable Table Properties modal that brings detailed table customization into a single, accessible interface. Activated via the table toolbar, this modal lets users set background colors using a color picker that supports both RGB and hex values, applying changes uniformly across all cells. Table borders can now be precisely styled with user-defined color, thickness, and style options such as solid, dotted, dashed, and more. Users can also define table width and height in pixels or percentages, ensuring responsive layouts that adapt to various screen sizes. Alignment controls allow tables to be positioned left, center, or right within the content area. For enhanced readability, especially in data-intensive scenarios, alternating row colors can be toggled on or off to visually separate content. This update gives developers and content creators the granular control needed to create well-structured and visually consistent tables.

To see a full list of what's new in 4.6.0, see our release notes.

Froala Editor is licensed per product and domain. It is available as an annual or perpetual license with version upgrades and support. See our Froala Editor licensing page for full details.

For more information, visit our Froala Editor product page.

Apply LAMBDA Functions Directly to Cell Selections

August 15, 2025
SpreadJS 18.2 adds new Transform command to execute LAMBDA formulas over selected cells and replace them in one step.

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.

The SpreadJS 18.2 adds a new Transform command which enables you to apply LAMBDA functions directly to a selected range of cells and replace the original content with calculated results. This simplifies data transformations - whether mapping, filtering, or reshaping - into a clean, single-step process. With this feature, you can select any range and apply a custom LAMBDA formula - for example, converting units, adjusting values, or formatting entries - and have SpreadJS overwrite the selection with the computed results immediately. This removes manual steps like inserting formulas in separate cells, copying values, or pasting back as values. This feature integrates with SpreadJS’s existing LAMBDA capabilities to offer more interactive and efficient spreadsheet manipulation.

To see a full list of what's new in 18.2, 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.