TextMetrics: emHeightAscent property
Note: This feature is available in Web Workers.
The read-only emHeightAscent
property of the TextMetrics
interface returns the distance from the horizontal line indicated by the CanvasRenderingContext2D.textBaseline
property to the top of the em square in the line box, in CSS pixels.
Value
A number, in CSS pixels.
Examples
js
const canvas = document.createElement("canvas");
const ctx = canvas.getContext("2d");
const text = ctx.measureText("foo"); // returns TextMetrics object
text.emHeightAscent; // 7.59765625;
Specifications
Specification |
---|
HTML # dom-textmetrics-emheightascent-dev |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
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emHeightAscent |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
- User must explicitly enable this feature.
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.