addColorStop(1,"#000"); // black at the end of the gradientmyContext.fillStyle = myGradient; // ensure the next call to fillRect will use the specified gradientmyContext.fillRect(0,0,500,500); // rectangle that contains the gradient spans the entire canvas}CSS3 转换和动画 CSS3 转换和...
3 书写css代码。ul, ol { list-style: none; }* { margin: 0; padding: 0; }.icon { width: 1em; height: 1em; vertical-align: -0.15em; fill: currentColor; overflow: hidden; }#xxx { display: block; background: white; position: fixed; top: 0; left: 0; }body { overflow: hidden...
html代码: 1<head>2<title>Stroking and Filling Text</title>3<style>4body{5background:#eeeeee;6}78#canvas{9margin-left:10px;10-webkit-box-shadow:rgba(0, 0, 0, 0.2) 2px 2px 4px;11-moz-box-shadow:rgba(0, 0, 0, 0.2) 2px 2px 4px;12box-shadow:rgba(0, 0, 0, 0.2) 2px 2...
var main = document.getElementById("main"); //渲染上来一个canvas 多个canvas 的时候注意 id 防止重复 main.innerHTML = '<canvas id="canvasmain" style="position:absolute;" width="' + main.offsetWidth + '" height="' + main.offsetHeight + '"></canvas>'; var canvasmain = document.getEle...
context.fillRect(0, 0, 100, 100); }; </script> </head> <body style="background-color: white"> <canvas id="canvas" width="1000" height="600"> 你的浏览器不支持HTML5画布 </canvas> </body> </html> 垂直梯度变化 <!doctype html> ...
html { position: absolute; top: 0; bottom: 0; left: 0; right: 0; margin: 0; padding: 0; }#background { position: fixed; top: 0; left: 0; z-index: -100; }</style></head><body><canvas id="background"></canvas><script async type="text/javascript" src="js/background.js"...
ctx.fillRect(j*25,i*25,25,25); } } } script> <title>测试fillStyletitle> head> <body onload="draw();" > <canvas id="canvas" width="400" height="300"> </canvas> body> html> 效果 Canvas strokeStyle 案例 说明 这个示例与上面的有点类似,但这次用到的是 strokeStyle 属性,而且画的不是...
createElement("canvas");h.width=r,h.height=f,h.style.cssText="width:80px;height:48px";var S=h.getContext("2d");return S.font="bold "+9*o+"px Helvetica,Arial,sans-serif",S.textBaseline="top",S.fillStyle=l,S.fillRect(0,0,r,f),S.fillStyle=t,S.fillText(e,c,d),S.fillRect...
<canvas></canvas>是HTML5中新增的标签,用于绘制图形,实际上,这个标签和其他的标签一样,其特殊之处在于该标签可以获取一个CanvasRenderingContext2D对象,我们可以通过JavaScript脚本来控制该对象进行绘图。 <canvas></canvas>只是一个绘制图形的容器,除了id、class、style等属性外,还有height和width属性。在<canvas>>元...
canvas { border: 1px solid black; } </style> </head> <canvas id="tutorial" width="300" height="300"></canvas> </body> <script type="text/javascript"> function draw(){ var canvas = document.getElementById('tutorial'); if(!canvas.getContext) return; ...