事先准备: 引入fontawesome官网文件
或单独引入fontawesome.otf并在全局css中指定@font
每个图标的unicode码在Cheetsheat获取
draw事件中:
//canvas = ...
//ctx = ...
ctx.save();
ctx.font = "12px FontAwesome"; //字体大小
ctx.fillStyle = "rgba(255,255,255,1)"; //颜色
var txt = "\uf036"; //Unicode码
ctx.fillText(txt,x,y);
ctx.restore();