W3School TIY Editor
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<!DOCTYPE html> <html> <style> #myDIV { margin-top: 10px; height: 250px; width: 250px; overflow: auto; } #content { height: 800px; width: 2000px; padding: 10px; background-color: coral; } </style> <body> <h1>Element 对象</h1> <h2>scrollHeight 和 scrollWidth 属性</h2> <div id="myDIV"> <div id="content">一些内容 ...</div> </div> <p id="demo"></p> <script> const element = document.getElementById("content"); let y = element.scrollHeight; let x = element.scrollWidth; document.getElementById ("demo").innerHTML = "Height: " + y + " Width: " + x; </script> </body> </html>