The DOMPointReadOnly()
constructor returns a new DOMPointReadOnly
object representing a point in 2D or 3D space, optionally with perspective, whose values cannot be altered by script code.
Syntax
point = new DOMPointReadOnly(x, y, z, w);
Parameters
x
Optional- The value of the horizontal coordinate, x, as a floating point number. The default value is 0.
y
Optional- The value of the vertical coordinate, y, as a floating point number. The default value is 0.
z
Optional- The value of the depth coordinate, z, as a floating point number. The default value is 0.
w
Optional- The value of the perspective, w, as a floating point number. The default is 1.
Note: Each of these values is what's called an unrestricted number. In addition to any finite floating-point value, you may use special values such as ±Infinity
and NaN
.
Return value
A new DOMPointReadOnly
object representing the specified location in space.
Examples
The following code demonstrates creating both 2D and 3D points.
var point2D = new DOMPointReadOnly(50, 25); var point3D = new DOMPointReadOnly(50, 0, 10); var perspectivePoint3D = new DOMPointReadOnly(50, 50, 25, 0.5);
Specifications
Specification | Status | Comment |
---|---|---|
Geometry Interfaces Module Level 1 The definition of 'DOMPointReadOnly' in that specification. |
Candidate Recommendation | Initial definition |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
DOMPointReadOnly() constructor | Chrome Full support 61 | Edge Full support 79 | Firefox Full support 31 | IE No support No | Opera Full support 48 | Safari Full support 10.1 | WebView Android Full support 61 | Chrome Android Full support 61 | Firefox Android Full support 31 | Opera Android Full support 45 | Safari iOS Full support 10.3 | Samsung Internet Android Full support 8.0 |
Legend
- Full support
- Full support
- No support
- No support