DOMMatrixReadOnly: toJSON() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.

See full compatibility

The toJSON() method of the DOMMatrixReadOnly interface creates and returns a JSON object. The JSON object includes the 2D matrix elements a through f, the 16 elements of the 4X4 3D matrix, m[1-4][1-4], the boolean is2D property, and the boolean isIdentity property.

Syntax

toJSON()

Parameters

None.

Return value

A JSON object; a JSON representation of the DOMMatrixReadOnly object.

Examples

const matrix = new DOMMatrixReadOnly();
console.log(matrix.translate(20, 30).toJSON());
/*
{
    "a": 1,
    "b": 0,
    "c": 0,
    "d": 1,
    "e": 20,
    "f": 30,
    "m11": 1,
    "m12": 0,
    "m13": 0,
    "m14": 0,
    "m21": 0,
    "m22": 1,
    "m23": 0,
    "m24": 0,
    "m31": 0,
    "m32": 0,
    "m33": 1,
    "m34": 0,
    "m41": 20,
    "m42": 30,
    "m43": 0,
    "m44": 1,
    "is2D": true,
    "isIdentity": false
}
*/
console.log(matrix.translate(22, 55, 66).toJSON());
/*
{
    "a": 1,
    "b": 0,
    "c": 0,
    "d": 1,
    "e": 22,
    "f": 55,
    "m11": 1,
    "m12": 0,
    "m13": 0,
    "m14": 0,
    "m21": 0,
    "m22": 1,
    "m23": 0,
    "m24": 0,
    "m31": 0,
    "m32": 0,
    "m33": 1,
    "m34": 0,
    "m41": 22,
    "m42": 55,
    "m43": 66,
    "m44": 1,
    "is2D": false,
    "isIdentity": false
}
*/

Specifications

Specification
Geometry Interfaces Module Level 1 # dom-dommatrixreadonly-tojson

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`toJSON()`	Chrome – Full support Chrome 61 (Release date: 2017-09-05) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 62 (Release date: 2018-09-05) footnote Full support	Opera – Full support Opera 48 (Release date: 2017-09-27) footnote Full support	Safari – Full support Safari 11 (Release date: 2017-09-19) footnote Full support	Chrome Android – Full support Chrome Android 61 (Release date: 2017-09-05) footnote Full support	Firefox for Android – Full support Firefox for Android 62 (Release date: 2018-09-05) footnote Full support	Opera Android – Full support Opera Android 45 (Release date: 2018-02-15) footnote Full support	Safari on iOS – Full support Safari on iOS 11 (Release date: 2017-09-19) footnote Full support	Samsung Internet – Full support Samsung Internet 8 (Release date: 2018-07-18) footnote Full support	WebView Android – Full support WebView Android 61 (Release date: 2017-09-05) footnote Full support	WebView on iOS – Full support WebView on iOS 11 (Release date: 2017-09-19) footnote Full support

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Full support: Full support