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<!DOCTYPE html> <html> <body> <p>要使用的图片：</p> <img id="scream" src="img_the_scream.jpg" alt="呐喊" width="220" height="277"> <p>要填充的画布：</p> <canvas id="myCanvas" width="250" height="300" style="border:1px solid #d3d3d3;"> 您的浏览器不支持 HTML canvas 标签。</canvas> <p><button onclick="myCanvas()">试一试</button></p> <script> function myCanvas() { var c = document.getElementById("myCanvas"); var ctx = c.getContext("2d"); var img = document.getElementById("scream"); ctx.drawImage(img,10,10); } </script> </body> </html>