失去焦点
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <script src="jquery-3.4.1.min.js"></script> </head> <body> <input type="text" id="blur" /> <script type="text/javascript"> $(function(){ //失去焦点 $("#blur").blur( function(){ alert("失去焦点触发!"); }); }); </script> </body> </html>