<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> <canvas id="canvas" style="margin:0 auto;border:1px #ddd solid"> The current browser does not support Canvas, can replace the browser a try! </canvas> <script> window.onload = function(){ var canvas = document.getElementById(‘canvas‘); canvas.width = 1024; canvas.height = 768; if(canvas.getContext(‘2d‘)){ var context = canvas.getContext(‘2d‘); context.fillStyle = "#058"; context.font = "bold 120px Arial"; context.textAlign = "center"; context.textBaseline = "middle"; //begin context.shadowColor = "gray"; context.shadowOffsetX = 20; context.shadowOffsetY = 20; context.shadowBlur = 25; context.fillText("Canvas",canvas.width/2,canvas.height/2) }else{ alert(‘当前游览器不支持Canvas，请更换游览器后再试！‘); } } </script> </body> <script> /*阴影 context.shadowColor //偏移坐标 context.shadowOffsetX context.shadowOffsetY //模糊程度 context.shadowBlur */ </script> </html>
原文：http://www.cnblogs.com/cynthia-wuqian/p/4988517.html