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TextMetrics: emHeightDescent property

files/en-us/web/api/textmetrics/emheightdescent/index.md

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{{APIRef("Canvas API")}}{{AvailableInWorkers}}

The read-only emHeightDescent property of the {{domxref("TextMetrics")}} interface returns the distance from the horizontal line indicated by the {{domxref("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

{{Specifications}}

Browser compatibility

{{Compat}}

See also

  • {{domxref("TextMetrics")}}