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来源：6-2 编程练习

慕设计0337955

2018-10-27 15:54:38

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>canvas字体</title>
    <style>
        canvas{background-color:lightblue;}
    </style>
</head>
<body>
    <canvas id="canvas" width="800px" height="800px">您的浏览器不支持canvas
    </canvas>
    <script>
        var canvas=document.getElementById("canvas");
        var context=canvas.getContext('2d');
        //此处补充代码
        var str1="前端路径课程"

        context.font="30px 微软雅黑 bold";
        context.fillStyle="blue";
        context.textAlign="center";
        context.fillText(str1,400,400);
        context.textBaseline="middle";
        var w=context.measureText(str1).width;
        var str2="字体的width是:"+w+"px";
        context.fillText(str2,400,450);
    </script>
</body>
</html>