web api instance property
TextMetrics: emHeightAscent property
Available in workers
The read-only emHeightAscent property of the TextMetrics interface returns the distance from the horizontal line indicated by the textBaseline property to the top of the em square in the line box, in CSS pixels.
Value
A number, in CSS pixels.
Examples
const canvas = document.createElement("canvas");
const ctx = canvas.getContext("2d");
const text = ctx.measureText("foo"); // returns TextMetrics object
text.emHeightAscent; // 7.59765625;
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.