js進階Web APIs---tab選單欄(選項卡)的實現
阿新 • • 發佈:2021-01-27
技術標籤:筆記javascript
請用藍色筆觸顏色繪製一個矩形
<!DOCTYPE html>
<html>
<body>
<canvas id="myCanvas" width="300" height="150" style="border:3px solid #d3d3d3;">
Your browser does not support the HTML5 canvas tag.</canvas>
<script type="text/javascript" >
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.strokeStyle="#0000ff"; /*筆觸顏色*/
ctx.strokeRect(20,20,200,100); /*筆觸開始20,20, 終止座標20+280,20+130*/
</script>
</body>
</html>