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帮忙看看怎么不出来哪里错误了

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<canvas id="canvas"  style=" border: 1px solid #234; display: block;margin: 100px auto" ></canvas>
<script>
    var dw=[
        {p:[{x:0,p:0},{x:800,y:0},{x:400,y:400}],color:"#caff67"},
        {p:[{x:0,p:0},{x:400,y:400},{x:0,y:800}],color:"#67becf"},
        {p:[{x:800,p:0},{x:800,y:400},{x:600,y:600},{x:600,y:200}],color:"#ef3d61"},
        {p:[{x:600,p:200},{x:600,y:600},{x:400,y:400}],color:"#caff67"},
        {p:[{x:400,p:400},{x:600,y:600},{x:400,y:800},{x:200,y:600}],color:"#a594c0"},
        {p:[{x:200,p:600},{x:400,y:800},{x:0,y:800}],color:"#fa8ecc"},
        {p:[{x:800,p:400},{x:800,y:800},{x:400,y:800}],color:"#f6ca29"}

    ];
    window.onload=function(){
        var canvas=document.getElementById('canvas');
        canvas.width=800;
        canvas.height=800;
        var context=canvas.getContext('2d');
        for(var j=0;j<dw.length;j++)
        draw(dw[j],context);
    };
    function draw(piece,cxt) {
            cxt.beginPath();
            cxt.moveTo(piece.p[0].x,piece.p[0].y);
            for(var i=1;i<piece.p.length;i++)
                cxt.lineTo(piece.p[i].x,piece.p[i].y);
            cxt.closePath();

                cxt.fillStyle=piece.color;
                cxt.fill();

    }
</script>
</body>
</html>


北京以南
浏览 1214回答 1
1回答

ChinaCJM

var dw=[                 {p:[{x:0,p:0},{x:800,y:0},{x:400,y:400}],color:"#caff67"},         {p:[{x:0,p:0},{x:400,y:400},{x:0,y:800}],color:"#67becf"},         {p:[{x:800,p:0},{x:800,y:400},{x:600,y:600},{x:600,y:200}],color:"#ef3d61"},         {p:[{x:600,p:200},{x:600,y:600},{x:400,y:400}],color:"#caff67"},         {p:[{x:400,p:400},{x:600,y:600},{x:400,y:800},{x:200,y:600}],color:"#a594c0"},         {p:[{x:200,p:600},{x:400,y:800},{x:0,y:800}],color:"#fa8ecc"},         {p:[{x:800,p:400},{x:800,y:800},{x:400,y:800}],color:"#f6ca29"}     ];这里每一行的第一个“y”都被你写成“p”了。这要改过来就正确了var dw=[                 {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:"#caff67"},         {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"}     ];
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