<!DOCTYPE html> <html> <head> <title> jQuery trim() method</title> <script src = "/ajax/libs/jquery/3.5.1/jquery.min.js"></script> </head> <body> <h4> This is an example of using trim() method </h4> <p style = "color: blue;"> Click the following button to trim the string </p> <button id = "btn"> Click me </button> <script> $(document).ready(function(){ $("#btn").click(function(){ var str = "\n\n Welcome to the lidihuo.com \n\n"; alert("The original string is: " + str); str = jQuery.trim(str); alert("The trimmed string is: " + str); }); }); </script> </body> </html>