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<!DOCTYPE html> <html> <body> <p>This example uses the addEventListener() method to attach a "resize" event on the window object.</p> <p>Try to resize the browser window.</p> <p>Window resized <span id="demo">0</span> times.</p> <script> window.addEventListener("resize", myFunction); var x = 0; function myFunction() { var txt = x += 1; document.getElementById("demo").innerHTML = txt; } </script> </body> </html>