W3School TIY Editor
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<!DOCTYPE html> <html> <body> <p>要使用的图像：</p> <img id="tulip" src="/i/eg_tulip.jpg" alt="The Tulip" /> <p>画布：</p> <canvas id="myCanvas" width="500" height="300" style="border:1px solid #d3d3d3;background:#ffffff;"> Your browser does not support the HTML5 canvas tag. </canvas> <script> document.getElementById("tulip").onload=function(){ var c=document.getElementById("myCanvas"); var ctx=c.getContext("2d"); var img=document.getElementById("tulip"); ctx.drawImage(img,10,10); }; </script> </body> </html>