var mycanvas=document.getElementById("myCanvasTag"); var mycontext=mycanvas.getContext('2d'); var mygradient=mycontext.createLinearGradient(30,30,300,300); mygradient.addColorStop(0,"#FF0000"); mygradient.addColorStop(1,"#00FF00"); mycontext.fillStyle=mygradient; mycontext.fillRect(0,0,400,400);

标签：html5,canvas