Notícias sobre JavaScript / HTML5

Criptografe e descriptografe PDFs com precisão

Agosto 5, 2025
Proteja arquivos PDF usando criptografia robusta e descriptografe-os facilmente para restaurar o acesso de usuários autorizados quando necessário.

Encrypting and decrypting PDF files is a key feature in many modern PDF components, allowing developers to protect sensitive information and control access to documents. Encryption applies a security layer to the PDF, typically requiring a password to open or modify the file, while decryption reverses the process for authorized users. These capabilities are essential for applications that handle confidential business data, legal documents, or personal records, ensuring compliance with security policies and data protection regulations.

Several JavaScript PDF controls offer the ability to encrypt or decrypt PDF files including:

  • Wijmo PDF (part of Wijmo by MESCIUS) enables developers to apply password-based encryption when generating PDFs, ensuring that only authorized users can view or alter the document.
  • Aspose.PDF for JavaScript via C++ provides robust encryption options, including support for various encryption algorithms and permission settings to restrict printing, copying, and editing, along with decryption capabilities for authorized access.
  • IronPDF for Node.js by Iron Software offers high-level methods to encrypt and decrypt PDFs, supporting both user and owner passwords, making it straightforward to secure documents before distribution and to unlock them when required.

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

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Exiba dados hierárquicos em lista de árvore

Julho 25, 2025
Listas de árvore apresentam dados hierárquicos em um formato expansível, com classificação, filtragem e edição integradas para simplificar a exibição e o gerenciamento.

TreeLists in UI suites are specialized components designed to display hierarchical, self-referencing data in a tabular format with expandable and collapsible rows. They combine the structure of a tree view with the functionality of a data grid, offering built-in features such as sorting, filtering, editing, and paging. This makes them ideal for scenarios where complex relationships must be presented clearly, such as organization charts, project task structures, file directories, or product categories. Their intuitive layout and powerful data management capabilities help streamline workflows and enhance the user experience in enterprise and business applications.

Several jQuery UI suites feature a treelist control including:

  • jQWidgets lets you organize hierarchical data in a grid with built-in sorting, filtering, and editing for seamless interaction and control.
  • Infragistics Professional enables you to display structured, self-referencing data in expandable rows with full support for editing, paging, and responsive layouts.
  • Kendo UI by Telerik allows you to present hierarchical tabular data with intuitive expand/collapse features, rich interactivity, and flexible data management tools.
  • DevExtreme Complete by DevExpress facilitates interactive display of tree-structured data using advanced grid features like inline editing, filtering, and virtual scrolling.

For an in-depth analysis of features and price, visit our jQuery UI Suites comparison.

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Destaque o conteúdo principal do PDF com precisão

Julho 25, 2025
As anotações retangulares permitem que os usuários marquem PDFs, tornando as revisões, aprovações e edição colaborativa mais eficazes e visualmente claras.

Rectangle annotations in PDF viewer components enable users to highlight, mark, or comment on specific areas within a PDF document by drawing rectangular shapes. This feature is commonly used for reviewing documents, collaborating on content, or emphasizing sections in technical or legal workflows. It enhances user interactivity within the viewer, allowing for visual references and context-specific notes without altering the original document content.

Several React PDF viewer controls offer rectangle annotations including:

  • Document Solutions for PDF by MESCIUS provides rectangle annotations as part of its comprehensive annotation API, supporting precise placement and customization.
  • PrizmDoc Viewer by Accusoft includes rectangle annotations within its markup and redaction tools, offering collaborative editing capabilities with server-side processing.
  • Syncfusion PDF Viewer (part of Syncfusion Essential Studio Enterprise) supports interactive rectangle annotations through its built-in annotation toolbar.

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

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Exporte grades de dados para JSON em aplicativos Vue.js

Julho 24, 2025
Exporte dados tabulares em JavaScript Object Notation (JSON), um formato fácil de analisar e integrar a outros sistemas.

Exporting a data grid to JSON format is a common feature in modern web-based data tools that involves converting the structured data displayed in a grid, such as rows and columns representing records and fields, into JavaScript Object Notation (JSON), a lightweight, text-based format commonly used for data interchange. This process enables the grid's contents to be saved in a machine-readable structure that preserves the hierarchy and attributes of the data, making it easily consumable by web services, APIs, or other applications. The benefits of exporting to JSON include its compatibility with a wide range of programming environments, ease of integration with frontend and backend systems, and suitability for transmitting data across networked systems or persisting it for later use in client-side operations or remote storage.

Several Vue.js grid controls allow you to export to JSON, including:

  • FusionGrid by FusionCharts works with Vue.js and allows you to export grid data to JSON, enabling seamless integration with APIs and JavaScript-based applications.
  • jQWidgets Grid (part of jQWidgets) offers a straightforward method to convert visible grid data to JSON in Vue.js apps, preserving data types and custom formatting.
  • Jspreadsheet Pro Data Grid (part of Jspreadsheet Pro) enables Vue.js applications to export spreadsheet-style data to JSON, ideal for syncing with databases or external services.
  • DataGridXL facilitates JSON output from grid data, ensuring compatibility with modern frameworks and smooth data handling in JavaScript-driven workflows.

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

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Compare os dados com agregação mais inteligente

Julho 24, 2025
O Stimulsoft Reports.JS permite a comparação de dados baseados em tempo usando funções de agregação como Média, Soma, Mín e Máx para personalizar gráficos.

Stimulsoft Reports.JS provides a robust reporting toolkit designed specifically for JavaScript applications. This library leverages a client-side architecture, offering a pure JavaScript report engine for efficient report rendering directly within web browsers. The solution includes a user-friendly report designer for building reports with various data sources and visualizations, along with a report viewer for seamless integration and display within your JavaScript applications. This eliminates the need for server-side dependencies or browser plugins, simplifying the development process for embedding powerful reporting functionalities into your web projects.

Stimulsoft Reports.JS now supports aggregation for Date Time Step, allowing developers to select from multiple data aggregation functions including Average, Sum, Min, Max, and Count. This enhancement provides greater control over how time-based data is grouped and displayed in report charts, enabling more accurate and relevant visualizations based on the specific nature of the dataset. By choosing the appropriate aggregation method, developers can optimize performance reporting, reveal insights more effectively, and better align visual outputs with analytical requirements.

Stimulsoft Reports.JS is licensed per developer and is available as a Perpetual license with 1 year support and maintenance. See our Stimulsoft Reports.JS licensing page for full details.

Stimulsoft Reports.JS is available individually or as part of Stimulsoft Ultimate.