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<html><body onresize="myFunction()"><p>Assign an "onresize" event to a body element.</p><p>Try to resize the browser window.</p><p>Window resized <span id="demo">0</span> times.</p><script>var x = 0;function myFunction() { var txt = x += 1; document.getElementById("demo").innerHTML = txt;}</script></body></html>