The read-only actualBoundingBoxLeft property of the TextMetrics interface is a double giving the distance parallel to the baseline from the alignment point given by the CanvasRenderingContext2D.textAlign property to the left side of the bounding rectangle of the given text, in CSS pixels; positive numbers indicating a distance going left from the given alignment point.
js
const canvas = document.createElement("canvas"); const ctx = canvas.getContext("2d"); const text = ctx.measureText("foo"); // returns TextMetrics object text.actualBoundingBoxLeft; // 0;
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
actualBoundingBoxLeft |
77 | 79 | 74 | No | 64 | 11.1 | 77 | 77 | 79 | 55 | 11.3 | 12.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/TextMetrics/actualBoundingBoxLeft