例 2.1(trimSystemApi.html) <html> <head> <title>$.trim()</title> <script language="javascript" src="jquery.min.js"></script> <script language="javascript"> /*jQuery.trim(str) 去掉字符串起始和结尾的空格。 */ var sString = " 12345 "; /* if the following $ is changed to jQuery, the result is the same. */ sString = $.trim(sString); //sString = jQuery.trim(sString); alert(sString.length); </script> </head> <body> </body> </html>
更多请见:https://blog.csdn.net/qq_44594371/article/details/103062778
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