お絵描きアプリと画像の保存処理の実装<!DOCTYPE HTML> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, height=device-height, initial-scale=1, maximum-scale=1, user-scalable=no"> <script src="components/loader.js"></script> <link rel="stylesheet" href="components/loader.css"> <link rel="stylesheet" href="style.css"> <script> window.addEventListener('load',onLoad,false); function onLoad() { var wid
