使用以下方法通过 HTML5 Canvas 创建图案：createPattern(image, repetition)− 此方法将使用图像来创建图案。第二个参数可以是具有以下值之一的字符串：repeat、repeat-x、repeat-y 和 no-repeat。如果指定空字符串或 null，则将假定重复。
您可以尝试运行以下代码来了解如何创建一个模式 -
<!DOCTYPE HTML>
<html>
<head>
<style>
#test {
width:100px;
height:100px;
margin: 0px auto;
}
</style>
<script>
function drawShape(){
// get the canvas element using the DOM
var canvas = document.getElementById('mycanvas');
// Make sure we don't execute when canvas isn't supported
if (canvas.getContext){
// use getContext to use the canvas for drawing
var ctx = canvas.getContext('2d');
// create new image object to use as pattern
var img = new Image();
img.src = 'images/pattern.jpg';
img.onload = function(){
// create pattern
var ptrn = ctx.createPattern(img,'repeat');
ctx.fillStyle = ptrn;
ctx.fillRect(0,0,150,150);
}
} else {
alert('You need Safari or Firefox 1.5+ to see this demo.');
}
}
</script>
</head>
<body id = "test" onload = "drawShape();">
<canvas id = "mycanvas"></canvas>
</body>
</html>
