我的畫不出來求各位大神幫忙看下
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>canvas繪制七巧板拼圖</title>
</head>
<body>
<canvas id="canvas" ?style="border:1px solid #CCCCCC;display:block;margin:0 auto;">當瀏覽器不支持canvas時，請更換劉瀏覽器</canvas>
<script type="text/javascript">
//定義多維數組代表七巧板的七塊
var tangram = [
{p:[{x:0,y:0},{x:800,y:0},{x:400,y:400}],color:"#caff67"},
{p:[{x:0,y:0},{x:400,y:400},{x:0,y:800}],color:"##67becf"},
{p:[{x:800,y:0},{x:800,y:400},{x:600,y:600},{x:600,y:200}],color:"#ef3d61"},
{p:[{x:600,y:200},{x:600,y:600},{x:400,y:400}],color:"#f9f51a"},
{p:[{x:400,y:400},{x:600,y:600},{x:400,y:800},{x:200,y:600}],color:"#a594c0"},
{p:[{x:200,y:600},{x:400,y:800},{x:0,y:800}],color:"#fa8ecc"},
{p:[{x:800,y:400},{x:800,y:800},{x:400,y:800}],color:"#f6ca29"},
];
window.onload=function(){
var canvas=document.getElementById("canvas");
var context=canvas.getContext("2d");
canvas.width=800;
canvas.height=800;
//遍歷數組中的數組
for(var i=0; i<tangram.length; i++){
draw(tangram[i],context)
}
function draw(piece,cxt){
cxt.beginPath();
cxt.moveTo(piece.p[0].x,piece.p[0].y);
for(var i=1;i<piece.p.lenght;i++){
cxt.lineTo(piece.p[i].x,piece.p[i].y);
}
cxt.closePath();
cxt.fillStyle = piece.color;
cxt.fill();
}
}
</script>
</body>
</html>
2017-10-25
打開控制臺，看看報什么錯？