DOMPoint.DOMPoint()

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DOMPoint() constructor creates and returns a new DOMPoint object, given the values for some or all of its properties.

You can also create a DOMPoint 通过调用 DOMPoint.fromPoint() static function. That function accepts as input a DOMPointInit compatible object, including a DOMPoint or DOMPointReadOnly .

句法

point = new DOMPoint(x, y, z, w);

参数

x 可选: x coordinate for the new DOMPoint .
y 可选: y coordinate for the new DOMPoint .
z 可选: z coordinate for the new DOMPoint .
w 可选: The perspective value of the new DOMPoint .

范例

此范例创建 DOMPoint representing the top-left corner of the current window, then creates a second point based on the first, which is then offset by 100 pixels both vertically and horizontally.

var windTopLeft = new DOMPoint(window.screenX, window.screenY);
var newTopLeft = DOMPoint.fromPoint(windTopLeft);
newTopLeft.x += 100;
newTopLeft.y += 100;

规范

规范	状态	注释
Geometry Interfaces Module Level 1 The definition of 'DOMPoint()' in that specification.	候选推荐	初始定义

浏览器兼容性

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. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`DOMPoint()` 构造函数	Chrome 61	Edge 79	Firefox 31	IE No	Opera 48	Safari 10.1	WebView Android 61	Chrome Android 61	Firefox Android 31	Opera Android 45	Safari iOS 10.3	Samsung Internet Android 8.0

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句法

参数

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浏览器兼容性

图例

另请参阅

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