<!DOCTYPE html>
<head>
<meta charset="utf-8">
</head>
<body>
<div id="gameArea"><canvas id="gameCanvas"></canvas></div>
<script>
var gameHeight = window.innerHeight; //取得瀏覽器內容的高度，放進設定的遊戲視窗高度。
var gameWidth = window.innerWidth; //取得瀏覽器內容的寬度，放進設定的遊戲視窗寬度。
var gameArea = document.getElementById("gameArea"); //利用"gameArea"這個ID來取得該Div
var gameCanvas = document.getElementById("gameCanvas"); //利用"gameCanvas"這個ID來取得該Canvas
gameArea.style.height = gameHeight; //設定gameArea的高度為遊戲視窗高度
gameArea.style.width = gameWidth; //設定gameArea的寬度為遊戲視窗寬度
gameCanvas.height = gameHeight; //設定gameCanvas的高度為遊戲視窗高度
gameCanvas.width = gameWidth; //設定gameCanvas的高度為遊戲視窗寬度
var ctx = gameCanvas.getContext("2d"); //取得gameCanvas的2D容器(Context)
ctx.fillStyle = "rgb(0,0,0)";
ctx.fillRect(0,0,gameWidth,gameHeight);
</script>
</body> |
