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The CanvasRenderingContext2D.measureText() method returns a TextMetrics object that contains information about the measured text (such as its width for example).
Syntax
ctx.measureText(text);
Parameters
- text
- The text to measure.
Return value
A TextMetrics object.
Examples
Given this <canvas> element:
<canvas id="canvas"></canvas>
You can get a TextMetrics object using the following code:
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