​x
 
<!DOCTYPE html>
<html>
<body>
​
<h1>Window 对象</h1>
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<h2>resizeBy() 方法</h2>
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<p>打开一个新窗口，将宽度减少 50px，将高度增加 50px。</p>
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<p>请多次单击“调整窗口大小”按钮。</p>
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<button onclick="openWin()">创建窗口</button>
<button onclick="resizeWin()">调整窗口大小</button>
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<script>
let myWindow;
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function openWin() {
  myWindow = window.open("", "", "width=500, height=500");
}
​
function resizeWin() {
  myWindow.resizeBy(-50, 50);
}
</script>
​
</body>
</html>
​