HTML canvas fillText() 方法

var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");

ctx.font = "20px Georgia";
ctx.fillText("Hello World!", 10, 50);

ctx.font = "30px Verdana";
// 创建渐变
var gradient = ctx.createLinearGradient(0, 0, c.width, 0);
gradient.addColorStop("0"," magenta");
gradient.addColorStop("0.5", "blue");
gradient.addColorStop("1.0", "red");
// 填充渐变
ctx.fillStyle = gradient;
ctx.fillText("Big smile!", 10, 90);