I have a functioning fiddle (based on the prior work of this answer) that demonstrates how to upload an image using a file input, place it inside a canvas, ... ... <看更多>

Summary; A simple example; The drawImage function; Loading the image programmatically; Reading the Image from the File System; “Retina” Canvas; Alternatives ... ... <看更多>

load an image from an input file into canvas tag . GitHub Gist: instantly share code, notes, and snippets. ... <看更多>

In this video I'll be showing you how to convert an HTML5 Canvas into a downloadable or view-able PNG or ... ... <看更多>

function drawImage(canvasCtx, imageSrc) { var img = new Image(); img.onload ... readAsDataURL(files[0]); } } // var canvas = document. ... <看更多>