运行效果:
A drawing of someing! var drawing = document.getElementById('drawing');if(drawing.getContext) {//绘制奥运五环,画圆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();//环环相扣,画弧(实现相关圆弧的覆盖)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(); }
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