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<!DOCTYPE html> <html> <body> <p>单击该按钮可显示该框架的高度和宽度。</p> <button onclick="myFunction()">试一试</button> <p><strong>注意：</strong> innerWidth 和 innerHeight 属性在 IE8 及更早版本中不受支持。</p> <p id="demo"></p> <script> function myFunction() { var w = window.innerWidth; var h = window.innerHeight; document.getElementById("demo").innerHTML = "Width: " + w + "<br>Height: " + h; } </script> </body> </html>