Edit in JSFiddle

var canvas = document.getElementById("myCanvas");
if (!canvas.getContext) {
    return;
}

var ctx = canvas.getContext("2d");
drawText();
drawHollowText();

function drawText() {
    ctx.save();
    ctx.font = "Bold 40px Arial";
    ctx.fillStyle = "#F60";
    ctx.fillText("Hello Canvas", 10, 100);
    ctx.restore();
}

function drawHollowText() {
    ctx.save();
    ctx.textAlign = "center";
    ctx.font = "Bold 70px Arial";
    ctx.strokeStyle = "#F60";
    ctx.strokeText("Hello Canvas", 220, 230);
    ctx.restore();
}

<canvas id="myCanvas" width="440" height="300">
    您的浏览器不支持canvas!
</canvas>