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<!DOCTYPE html> <html> <body> <h1>The Window Object</h1> <h2>The frames Property</h2> <p>Number of frames in this window:</p> <p id="demo"></p> <iframe style="width:100%;height:100px"></iframe> <iframe style="width:100%;height:100px"></iframe> <iframe style="width:100%;height:100px"></iframe> <script> let length = window.length; document.getElementById("demo").innerHTML = length; </script> </body> </html>
