DayPilot.Http.patch

The DayPilot.Http.patch() method makes an HTTP request to the specified URL using the PATCH method.

The syntax and behavior is inspired by axios.

It is a static method.

Declaration

DayPilot.Http.patch(url[, data[, options]]);

Parameters

• url (string) - URL of the HTTP request

• data - the HTTP request body. If this is an object, it will be converted to JSON using JSON.stringify(); a string is passed as is.

• options.contentType (string, optional) - request body content type. The default value is "application/json" if data is an object, or "text/plain" for other types.

• options.headers (object, optional) - an object with header values

Return Value

The DayPilot.Http.patch() method returns a promise. The promise resolves for HTTP status codes 200, 201, 204, and 304 when any nonempty response body is valid JSON. It rejects for other statuses or malformed JSON.

Resolved promise handlers receive an args object with the following properties:

• args.request - XMLHttpRequest object used for making the request

• args.data - event data received from the server, converted from JSON to object using JSON.parse()

Rejected promise handlers receive an args object with the following property:

• args.request - XMLHttpRequest object used for making the request

Response Parsing

In Pro since version 2026.4.7086, malformed JSON rejects the promise with an object containing args.request and args.exception. Use try/catch or a rejected-promise handler to handle it.

An empty successful response body is accepted and leaves args.data undefined. Unlike collection loaders such as events.load(), this HTTP helper does not require the JSON value to be an array.

Example

const data = {
  name: "John"
};
const id = 1;
const {data: result} = await DayPilot.Http.patch(`/user/${id}`, data);
console.log("result", result);

See Also

DayPilot.Http Class