Answer: ExtJS Sencha is a JavaScript framework used for building feature-rich and interactive web applications.
Answer: The MVC architecture in ExtJS Sencha separates an application into three distinct components: Model, View, and Controller. Models represent the data, Views handle the user interface, and Controllers manage the application logic.
Answer: To create a new ExtJS Sencha application, you can use the Sencha Cmd tool and run the command "sencha generate app [appName] [appPath]".
Answer: ExtJS Sencha provides various components, including grids, forms, charts, trees, panels, and buttons, to build the user interface of a web application.
Answer: ExtJS Sencha provides event listeners to handle events triggered by user interactions or system events. These listeners can be attached to components or application-level events.
Answer: Data binding in ExtJS Sencha establishes a connection between a data source and a component, ensuring that changes in data automatically update the associated component.
Answer: ExtJS Sencha provides data stores that can be configured to load data from various sources such as JSON files, RESTful APIs, or XML.
Answer: ExtJS Sencha provides built-in form validation mechanisms. You can define validation rules for form fields and display validation messages accordingly.
Answer: Layouts in ExtJS Sencha define the structure and positioning of components within a container. They help in achieving responsive and flexible UI designs.
Answer: ExtJS Sencha provides various mechanisms to handle asynchronous operations, such as using Promises, callbacks, or utilizing the ExtJS Sencha data package.
Answer: Stores in ExtJS Sencha act as data containers that hold and manage sets of records. They provide methods for data manipulation, filtering, sorting, and querying.
Answer: ExtJS Sencha Classic toolkit is focused on desktop-like applications, while the Modern toolkit is optimized for touch-based and mobile applications.
Answer: ExtJS Sencha allows customization of the theme using the SASS (Syntactically Awesome Style Sheets) preprocessor. You can modify variables, styles, and create custom themes.
Answer: Sencha Cmd is a command-line tool used for various development tasks, such as generating applications, building, deploying, and managing ExtJS Sencha projects.
Answer: View controllers in ExtJS Sencha handle the application logic associated with a specific view. They facilitate event handling, data manipulation, and communication between views.
Answer: ExtJS Sencha provides the Sencha Test framework for unit testing. It allows developers to write test cases, execute them, and analyze the test results.
Answer: The ExtJS Sencha data package provides powerful data handling and manipulation features, including data models, stores, proxies, and readers.
Answer: ExtJS Sencha provides a routing mechanism that allows developers to define routes, handle URL changes, and navigate between different views in the application.
Answer: Buffered rendering in ExtJS Sencha improves the performance of large data sets by rendering only a portion of the data visible in the viewport, resulting in faster scrolling and rendering times.
Answer: ExtJS Sencha supports internationalization through localization files. Developers can define language-specific resources and switch between different locales dynamically.
Answer: Mixins in ExtJS Sencha allow code reuse and composition by combining reusable code segments into a single class. They help in implementing cross-cutting concerns.
Answer: ExtJS Sencha provides a mechanism to handle exceptions using try-catch blocks. Additionally, ExtJS Sencha has error handling and reporting capabilities.
Answer: The ViewModel in ExtJS Sencha connects the data layer with the view layer, providing data for binding and facilitating communication between the two.
Answer: ExtJS Sencha provides various methods to filter data in stores, including using filter functions, filter properties, or using the filterBy method.
Answer: ExtJS Sencha offers a comprehensive set of tools and components that simplify web application development, provides excellent UI and UX, and supports cross-platform compatibility.