canvas stroke 描繪線條

步驟

  1. 建立路徑
    beginPath()
  2. 設定線條寬度(可省)
    lineWidth=”5″
  3. 設定顏色(可省)
    strokeStyle=”green”
  4. 開始
    moveTo(0, 100)
  5. 結束
    lineTo(300, 100)
  6. 畫出線來
    stoke()

範例

canvas#canvas(width="300", height="150")
const ctx=canvas.getContext("2d");
canvas.width=window.innerWidth;
canvas.height=window.innerHeight;

//draw a line
ctx.beginPath();//start to draw a line
ctx.lineWidth="5";//set line width
ctx.strokeStyle="green";//set color
ctx.moveTo(0, 100);//start point
ctx.lineTo(300, 100);//end point
ctx.stroke();//draw it

Display

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