本文主要包含HTML5-canvas-,h5,基础等相关知识,匿名希望在学习及工作中可以帮助到您
<canvas>新元素);
ctx.fillStyle="deeppink";
ctx.fillRect(10,10,100,100);
//ctx.moveTo(0,0); //定义开始坐标
//ctx.lineTo(100,100); //定义结束坐标
//ctx.stroke(); //绘制线条
//ctx.fillText("Hello World",10,50); //绘制实心字体
//ctx.strokeText("Hello World",10,50); //绘制空心字体
})</script><style type="text/css">canvas{border: 1px solid #000;}</style></head><body><canvas id="myCanvas" width="100" height="100"></canvas></body></html>
//ctx.moveTo(0,0); //定义开始坐标
//ctx.lineTo(100,100); //定义结束坐标
//ctx.stroke(); //绘制线条
})</script></head><body><canvas id="myCanvas" width="100" height="100"></canvas></body></html>
运行结果：
画圆
); ctx.fillStyle="deeppink"; ctx.arc(50,50,50,0,2*Math.PI); ctx.stroke();//ctx.fillText("Hello World",10,50); //绘制实心字体
//ctx.strokeText("Hello World",10,50); //绘制空心字体
})</script><style type="text/css">canvas{border: 1px solid #000;}</style></head><body><canvas id="myCanvas" width="100" height="100"></canvas></body></html>
运行结果：
渐变
createLinearGradient(x,y,x1,y1) - 创建线条渐变
createRadialGradient(x,y,r,x1,y1,r1) - 创建一个径向/圆渐变
// 创建渐变var grd=ctx.createLinearGradient(0,0,200,0); grd.addColorStop(0,"red"); grd.addColorStop(1,"blue"); // 填充渐变ctx.fillStyle=grd; ctx.fillRect(10,10,150,80);运行结果：
径向/圆渐变
var c=document.getElementById("myCanvas"); var ctx=c.getContext("2d"); // 创建渐变 var grd=ctx.createRadialGradient(75,50,5,90,60,100); grd.addColorStop(0,"red"); grd.addColorStop(1,"white"); // 填充渐变 ctx.fillStyle=grd; ctx.fillRect(10,10,150,80);运行结果：
图像
<!DOCTYPE html><html><head><meta charset="UTF-8" name="author" content="赵慧娟"><title></title><script src="Scripts/jquery-1.10.2.js?1.1.10"></script><style type="text/css">canvas{border: 1px solid #000;}#flower{border: 1px solid #000;width: 100px;height: 100px;}</style></head><body><img src="img/a.ico" id="flower" /><canvas id="myCanvas" width="100" height="100"></canvas><script type="text/javascript">$(function(){var canvas=document.getElementById("myCanvas")var ctx=canvas.getContext("2d");var img=document.getE