吳敏瑄JavaScript物件Object繪圖canvas蘋果公司發展
canvas繪圖套件繪製選擇權到期日損益圖 以上繪製選擇權損益程式碼 <style>h1{background-color: purple; color:white; padding: 10px;} </style> <h1>canvas繪圖套件繪製選擇權到期日損益圖</h1> <canvas id="BuyOptions" width="600" height="300"></canvas> <script> const c = document.getElementById("BuyOptions"); const ctx = c.getContext("2d"); ctx.strokeStyle = "green"; ctx.lineWidth = 5; ctx.beginPath(); ctx.moveTo(0, 0); ctx.lineTo(100, 100); ctx.lineTo(200,100); ctx.font = "16px Arial"; ctx.fillText("買入賣權puts的到期日損益",0,120); ctx.moveTo(300, 100); ctx.lineTo(400, 100); ctx.lineTo(500, 0); ctx.fillText("買入買權callss的到期日損益",300,120); ctx.moveTo(0, 300); ctx.lineTo(100, 200); ctx.lineTo(200,200); ctx.font ="30pt"; ctx.fillText("賣出賣權puts的到期日損益",0,180); ctx.moveTo(300, 200); ctx.lineTo(400, 200); ctx.lineTo(500, 300); ctx.fillText("賣出買權callss的到期日損益",300,180) ctx.stroke();//繪製 </scr...
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