TextMetrics: emHeightDescent property
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Note: This feature is available in Web Workers.
The read-only emHeightDescent property of the TextMetrics interface returns the distance from the horizontal line indicated by the CanvasRenderingContext2D.textBaseline property to the bottom 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.emHeightDescent; // -2.40234375;
Specifications
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| HTML # dom-textmetrics-emheightdescent-dev |
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Legend
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- Full support
- Full support
- No support
- No support
- User must explicitly enable this feature.