Can users save both their drawings and the background image after completing them?
var canvas = document.getElementById("canvas"); // This element is from the HTML
var context = canvas.getContext("2d"); // Retrieve the canvas context
canvas.style.backgroundImage = `url(${value.result.questionImage})`; // The image is fetched from a SQL database
// Users can then create drawings on the canvas...
It is recommended to draw the background image directly on the canvas instead of relying on the style attribute:
var canv = document.getElementById("canv"); // obtained from HTML
var context = canv.getContext("2d"); // obtain canvas context
var img = document.createElement('img');
img.onload = ()=>context.drawImage(img, 0,0);
img.src=value.result.questionImgUrl;
By incorporating the question image as part of the canvas, it ensures that the data url includes the image when fetched.
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