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Query

Reference
The Query is an object that provides a chainable interface for making data queries.

To create a Query, call the query(array) or query(url, queryOptions) method, depending on the type of the storage you access. The Query supports method chaining. This enables you to execute several..." ]) .sortBy("birthYear") .select("name", "birthYear") .toArray(); Angular TypeScript import Query from "devextreme/data/query"; // ... export class AppComponent { constructor

UI Components

Guides

Getting Started with Accordion jQuery NOTE Before you start the tutorial, ensure DevExtreme is installed in your application. Angular NOTE Before you start the tutorial, ensure DevExtreme is...

Query Methods

Reference
This section describes methods that perform operations on data associated with the Query.

/MyDataService", queryOptions) .enumerate() .done(function (result) { // "result" contains the obtained array }); Angular TypeScript import Query from "devextreme/data/query"; // ... export class AppComponent { constructor () { Query("http://mydomain.com/MyDataService", queryOptions) .enumerate() .then(result => { // "result

Components Testing

Guides

the test and see the result. Integration Testing Integration testing helps test a component across multiple units. Integration testing does not test unit by unit, but tests all the units as an entity...To test DevExtreme UI components for React, add the React Testing Library library to your project. This library is automatically added when you create a React project with the Create React App

Components Testing

Guides

test a component across multiple units. Integration testing does not test unit by unit, but tests all the units as an entity. The example below illustrates how to test the DataGrid's functionality...Projects created with Angular CLI have built-in testing support with the Jasmine test framework. View on GitHub Unit Testing Unit testing allows you to test single features