<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <script src="../js/jquery-3.2.1.min.js"></script> <title>Title</title> <script> $(function () { if($("#pid").text()==$.trim(" abc ")){ alert($("#pid").text()); } }); </script></head><body><p id="pid">abc</p></body></html>
来源:https://www.cnblogs.com/kukai/p/11317899.html