JavaScript canvas2d object property: width
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The width property of the JavaScript
DOM object returned
by the getContext("2d")
method applied to the HTML <canvas>
element returns the width of an ImageData object.
EXAMPLE:
HTML USED IN THIS EXAMPLE:
<!DOCTYPE html>
<html> <!-- Copyright (c) Nematrian Limited 2018 -->
<head></head>
<body>
<span id="element"></span>
<br><br>width and height of imageData object returned by getImageData(30,10,10,10) is:
<br><b id="x1"></b>
<script>
var x2 = document.createElement("CANVAS");
x2.setAttribute("width","200");
x2.setAttribute("height","100");
x2.setAttribute("style","border: 1px solid black");
var c2 = x2.getContext("2d");
c2.fillStyle = "blue";
c2.fillRect(10, 10, 180, 80);
var imgData = c2.getImageData(30,10,10,10)
document.getElementById("element").appendChild(x2);
document.getElementById("x1").innerHTML = imgData.width + " x " + imgData.height;
</script>
</body>
</html>
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