DOMPointReadOnly()

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

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support 61Edge No support NoFirefox Full support 31IE No support NoOpera Full support 48Safari No support NoWebView Android Full support 61Chrome Android Full support 61Edge Mobile No support NoFirefox Android Full support 31Opera Android Full support 48Safari iOS No support NoSamsung Internet Android ?

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown

 

Document Tags and Contributors

Contributors to this page: Sheppy
Last updated by: Sheppy,