解决方法
答案取自
Grid drawn using a <canvas> element looking stretched
刚刚编辑了一下,希望它有所帮助
<html> <head> <script type="text/javascript" language="javascript"> // Box width var bw = 400; // Box height var bh = 400; // Padding var p = 10; var canvas = document.getElementById("canvas"); var context = canvas.getContext("2d"); function drawBoard(){ for (var x = 0; x <= bw; x += 40) { context.moveTo(0.5 + x + p,p); context.lineTo(0.5 + x + p,bh + p); } for (var x = 0; x <= bh; x += 40) { context.moveTo(p,0.5 + x + p); context.lineTo(bw + p,0.5 + x + p); } context.strokeStyle = "black"; context.stroke(); } drawBoard(); </script> </head> <body style=" background: lightblue;"> <canvas id="canvas" width="420px" height="420px" style="background: #fff; margin:20px"></canvas> </body> </html>
