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.
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
js
toJSON()
Parameters
None.
Return value
A JSON object; a JSON representation of the DOMMatrixReadOnly object.
Examples
js
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
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