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TextMetrics: emHeightDescent property

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

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
emHeightDescent 77 79 118 No 64 11.1 No 77 118 No 11.3 No

See also

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https://developer.mozilla.org/en-US/docs/Web/API/TextMetrics/emHeightDescent