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 Standard # dom-textmetrics-emheightascent-dev |
Browser compatibility
BCD tables only load in the browser