本文实例为大家分享了JavaScript canvas实现七彩太阳光晕效果的具体代码，供大家参考，具体内容如下 <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="widt
本文实例为大家分享了JavaScript canvas实现七彩太阳光晕效果的具体代码，供大家参考，具体内容如下 .
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- <script>
- window.onload=function(){
- var canvas=document.getElementById('canvas');
- var cx=canvas.getContext("2d");
- cx.fillStyle='pink';
- cx.strokeStyle='pink';
- for(var i=0;i<10;i++){
- var g=cx.createLinearGradient(0,0,290,290);
- g.addColorStop(0,'rgba(255,0,0,1)');
- g.addColorStop(0.1,'rgba(255,0,0,0.5)');
- g.addColorStop(0.2,'rgba(255,165,0,0.4)');
- g.addColorStop(0.4,'rgba(205,255,0,0.5)');
- g.addColorStop(0.6,'rgba(230,145,0,0.5)');
- g.addColorStop(0.8,'rgba(0,127,255,0.5)');
- g.addColorStop(0.9,'rgba(100,200,205,0.9)');
- g.addColorStop(1,'rgba(0,255,255,0.5)');;
- cx.fillStyle=g;
- cx.beginPath();
- cx.arc(i*25,i*25,i*10,0,Math.PI*2,true);
- cx.closePath();
- cx.fill();
- }
- }
- </script>
- </head>
- <body>
- <canvas id="canvas" width="600px" height="600px" style="background-color: #ccc;"></canvas>
- </body>
- </html>
