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<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><!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_win_length by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 17:39:27 GMT --></html>