type

XMLHttpRequestBodyInit

type XMLHttpRequestBodyInit = Blob | BufferSource | FormData | URLSearchParams | string

Referenced types

class Blob

A file-like object of immutable, raw data. Blobs represent data that isn't necessarily in a JavaScript-native format. The File interface is based on Blob, inheriting blob functionality and expanding it to support files on the user's system.

MDN Reference

readonly size: number
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readonly type: string
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arrayBuffer(): Promise<ArrayBuffer>;
Returns a promise that resolves to the contents of the blob as an ArrayBuffer
bytes(): Promise<Uint8Array<ArrayBufferLike>>;
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bytes(): Promise<Uint8Array<ArrayBuffer>>;
Returns a promise that resolves to the contents of the blob as a Uint8Array (array of bytes) its the same as new Uint8Array(await blob.arrayBuffer())
formData(): Promise<FormData>;
Read the data from the blob as a FormData object.
This first decodes the data from UTF-8, then parses it as a multipart/form-data body or a application/x-www-form-urlencoded body.
The type property of the blob is used to determine the format of the body.
This is a non-standard addition to the Blob API, to make it conform more closely to the BodyMixin API.
json(): Promise<any>;
Read the data from the blob as a JSON object.
This first decodes the data from UTF-8, then parses it as JSON.
slice(
start?: number,
end?: number,
contentType?: string
): Blob;
MDN Reference
stream(): ReadableStream<Uint8Array<ArrayBufferLike>>;
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stream(): ReadableStream<Uint8Array<ArrayBuffer>>;
Returns a readable stream of the blob's contents
text(): Promise<string>;
Returns a promise that resolves to the contents of the blob as a string

type BufferSource = NodeJS.TypedArray<ArrayBufferLike> | DataView<ArrayBufferLike> | ArrayBufferLike

class FormData

Provides a way to easily construct a set of key/value pairs representing form fields and their values, which can then be easily sent using the XMLHttpRequest.send() method. It uses the same format a form would use if the encoding type were set to "multipart/form-data".

MDN Reference

[Symbol.iterator](): FormDataIterator<[string, FormDataEntryValue]>;
append(
name: string,
value: string | Blob
): void;
MDN Reference
append(
name: string,
value: string
): void;
append(
name: string,
blobValue: Blob,
filename?: string
): void;
delete(
name: string
): void;
MDN Reference
entries(): FormDataIterator<[string, FormDataEntryValue]>;
Returns an array of key, value pairs for every entry in the list.
entries(): IterableIterator<[string, string]>;
forEach(
callbackfn: (value: FormDataEntryValue, key: string, parent: FormData) => void,
thisArg?: any
): void;
get(
name: string
): null | FormDataEntryValue;
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getAll(
name: string
): FormDataEntryValue[];
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has(
name: string
): boolean;
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keys(): FormDataIterator<string>;
Returns a list of keys in the list.
keys(): IterableIterator<string>;
set(
name: string,
value: string | Blob
): void;
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set(
name: string,
value: string
): void;
set(
name: string,
blobValue: Blob,
filename?: string
): void;
values(): FormDataIterator<FormDataEntryValue>;
Returns a list of values in the list.
values(): IterableIterator<string>;

class URLSearchParams

MDN Reference

readonly size: number
MDN Reference
[Symbol.iterator](): URLSearchParamsIterator<[string, string]>;
append(
name: string,
value: string
): void;
Appends a specified key/value pair as a new search parameter.
MDN Reference
delete(
name: string,
value?: string
): void;
Deletes the given search parameter, and its associated value, from the list of all search parameters.
MDN Reference
entries(): URLSearchParamsIterator<[string, string]>;
Returns an array of key, value pairs for every entry in the search params.
forEach(
callbackfn: (value: string, key: string, parent: URLSearchParams) => void,
thisArg?: any
): void;
get(
name: string
): null | string;
Returns the first value associated to the given search parameter.
MDN Reference
getAll(
name: string
): string[];
Returns all the values association with a given search parameter.
MDN Reference
has(
name: string,
value?: string
): boolean;
Returns a Boolean indicating if such a search parameter exists.
MDN Reference
keys(): URLSearchParamsIterator<string>;
Returns a list of keys in the search params.
set(
name: string,
value: string
): void;
Sets the value associated to a given search parameter to the given value. If there were several values, delete the others.
MDN Reference
sort(): void;
MDN Reference
toJSON(): Record<string, string>;
toString(): string;
Returns a string containing a query string suitable for use in a URL. Does not include the question mark.
values(): URLSearchParamsIterator<string>;
Returns a list of values in the search params.