<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <title></title> <script src="jquery-3.5.1.min.js" type="text/javascript" charset="utf-8"></script> <style type="text/css"> #box { background-color: red; width: 100px; height: 100px; } </style> <script type="text/javascript"> $(document).ready(function() { $(document).click(function() { alert("click") }); // 触发浏览器行为 $(document).click(); // 触发浏览器行为 $(document).trigger("click"); // 不触发浏览器行为 $(document).triggerHandler("click"); // 不触发浏览器行为 获得焦点举例 $(document).triggerHandler("focus"); }); </script> </head> <body> <div id="box"> </div> </body> </html>