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HTML5 canvas imagedata width Attribute
HTML5 canvas referenceExample
Create a 50*50 pixels imagedata object where every pixel is red:
Canvas
JavaScript:
var ctx=c.getContext("2d");
var imgData=ctx.createImageData(50,50);
for (i=0; i<imgData.width*imgData.height*4;i+=4)
{
imgData.data[i+0]=255;
imgData.data[i+1]=0;
imgData.data[i+2]=0;
imgData.data[i+3]=255;
}
ctx.putImageData(imgData,10,10);
var imgData=ctx.createImageData(50,50);
for (i=0; i<imgData.width*imgData.height*4;i+=4)
{
imgData.data[i+0]=255;
imgData.data[i+1]=0;
imgData.data[i+2]=0;
imgData.data[i+3]=255;
}
ctx.putImageData(imgData,10,10);
Try it yourself »
Definition and Usage
The width attribute specifies the width of the imagedata object, in pixels.
JavaScript Syntax
| JavaScript syntax: | imgData.width=50; |
|---|
Browser Support
The width attribute is supported in all major browsers.
Attribute Values
| Values | Description |
|---|---|
| number | Specifies the width of the imagedata object |
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Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
While using this site, you agree to have read and accepted our terms of use and privacy policy.
Copyright 1999-2012 by Refsnes Data. All Rights Reserved.