TextMetrics: actualBoundingBoxAscent property
Note: This feature is available in Web Workers.
The read-only actualBoundingBoxAscent property of the TextMetrics interface is a double giving the distance from the horizontal line indicated by the CanvasRenderingContext2D.textBaseline attribute to the top of the bounding rectangle used to render the text, in CSS pixels.
Examples
js
const canvas = document.createElement("canvas");
const ctx = canvas.getContext("2d");
const text = ctx.measureText("foo"); // returns TextMetrics object
text.actualBoundingBoxAscent; // 8;
Specifications
| Specification |
|---|
| HTML Standard # dom-textmetrics-actualboundingboxascent-dev |
Browser compatibility
| desktop | mobile | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
actualBoundingBoxAscent | |||||||||||