Canvasで五芒星を書く - Qiita

createStar("test",150,100,50,"yellow"); function createStar(selector,x,y,r,color){ //五芒星の時の角度 var c1 = createCordinate(r,-90); var c2 = createCordinate(r,-234); var c3 = createCordinate(r,-18); var c4 = createCordinate(r,-162); var c5 = createCordinate(r,-306); var canvas = document.getElementById(selector); if(canvas == null){ canvas = document.getElementsByClassName(selector) } var context = can