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Window addEventListener() 方法
tryjsref_window_addeventlistener
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<!DOCTYPE html> <html> <body> <h1>The Windom Object</h1> <h2>The addEventListener() Method</h2> <p>Click anywhere in the window to display "Hello World!".</p> <p id="demo"></p> <script> window.addEventListener("click", function(){ document.getElementById("demo").innerHTML = "Hello World!"; }); </script> </body> </html>