站長(zhǎng)資訊網(wǎng)運(yùn)行效果：
<!DOCTYPE html> <html> <head> </head> <body> <canvas id="drawing" width="800" height="600">A drawing of someing!</canvas> <script type="text/javascript">var drawing = document.getElementById('drawing');if(drawing.getContext) {//繪制奧運(yùn)五環(huán)，畫(huà)圓var context = drawing.getContext('2d'); context.lineWidth = 7; context.strokeStyle = '#0180C3'; context.beginPath(); context.arc(70, 70, 40, 0, 2*Math.PI, false); context.stroke(); context.strokeStyle = '#000'; context.beginPath(); context.arc(160, 70, 40, 0, 2*Math.PI, false); context.stroke(); context.strokeStyle = '#BF0628'; context.beginPath(); context.arc(250, 70, 40, 0, 2*Math.PI, false); context.stroke(); context.strokeStyle = '#EBC41F'; context.beginPath(); context.arc(115, 110, 40, 0, 2*Math.PI, false); context.stroke(); context.strokeStyle = '#198E4A'; context.beginPath(); context.arc(205, 110, 40, 0, 2*Math.PI, false); context.stroke();//環(huán)環(huán)相扣，畫(huà)?。▽?shí)現(xiàn)相關(guān)圓弧的覆蓋）context.strokeStyle = '#0180C3'; context.beginPath(); context.arc(70, 70, 40, 1.9*Math.PI, 2.1*Math.PI, false); context.stroke(); context.strokeStyle = '#000'; context.beginPath(); context.arc(160, 70, 40, 1.9*Math.PI, 2.1*Math.PI, false); context.stroke(); context.beginPath(); context.arc(160, 70, 40, 0.5*Math.PI, 0.7*Math.PI, false); context.stroke(); context.strokeStyle = '#BF0628'; context.beginPath(); context.arc(250, 70, 40, 0.5*Math.PI, 0.7*Math.PI, false); context.stroke(); }</script> </body> </html>
