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<!DOCTYPE html> <html> <body> <h2>JavaScript <i>this</i> 关键字</h2> <p>在这个例子中，<b>this</b> 指的是窗口对象：</p> <p id="demo"></p> <script> "use strict"; var x = this; document.getElementById("demo").innerHTML = x; </script> </body> </html>