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<!DOCTYPE html> <html> <body> <canvas id="myCanvas" width="300" height="150" style="border:1px solid #d3d3d3;"> Your browser does not support the HTML5 canvas tag.</canvas> <script> var c = document.getElementById("myCanvas"); var ctx = c.getContext("2d"); var imgData = ctx.createImageData(100, 100); alert("Width of imgData is: " + imgData.width); var i; for (i = 0; i < imgData.data.length; 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); </script> </body> <!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryhtml5_canvas_imagedata_width by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 18:16:50 GMT --> </html>
