canvas实现图像布局填充功能

<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title>canvas-图像布局填充</title> <style> #canvas{ border: 1px solid palevioletred; } </style> </head> <body> <canvas> </canvas> <script> //获取到canvas元素 var canvas = document.getElementById('canvas'); //获取canvas中的画图环境 var context = canvas.getContext('2d'); //创建Image对象 var img = new Image(); //alert(img); //引入图片URL img.src = "./image/huiji.png"; window.onload = function (){ //创建填充规则 .createPattern(图像对象,'规则'); 第二参数:repeat,no-repeat,repeat-x,repeat-y; var pattern = context.createPattern(img,'no-repeat'); //设置填充属性 context.fillStyle = pattern; context.fillRect(10,10,canvas.width,canvas.height); } </script> </body> </html>

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