CanvasRenderingContext2D.measureText()
The CanvasRenderingContext2D
.measureText()
method returns a TextMetrics
object that contains information about the measured text (such as its width for example).
Syntax
JavaScript
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<var>ctx</var>.measureText(text);
Parameters
- text
- The text to measure.
Return value
A TextMetrics
object.
Examples
Given this <canvas>
element:
HTML
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<canvas id="canvas"></canvas>
You can get a TextMetrics
object using the following code:
JavaScript
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var canvas = document.getElementById("canvas"); var ctx = canvas.getContext("2d"); var text = ctx.measureText("foo"); // TextMetrics object text.width; // 16;
Specifications
Specification | Status | Comment |
---|---|---|
WHATWG HTML Living Standard The definition of 'CanvasRenderingContext2D.measureText' in that specification. |
Living Standard |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | 9 | (Yes) | (Yes) |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
See also
- The interface defining it,
CanvasRenderingContext2D
. TextMetrics
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/canvasrenderingcontext2d/measuretext