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<!DOCTYPE html> <html> <body> <p>此示例演示如何将“onfocusout”事件分配给输入元素。</p> <p>在输入字段中写入内容，然后在字段外单击以失去焦点。</p> <input type="text" onfocusout="myFunction()"> <script> function myFunction() { alert("输入字段失去焦点。"); } </script> </body> </html>