jquery $.trim () Method Usage Introduction

The role of $.trim (str) is to remove the string and the end of the space, the following for you to describe its specific use

$.trim (str)  

return: string; 

Description: Remove the string and the trailing blanks.  

example:  

First look at the error code error code:  

The code is as follows:

<input type= "text" name= "id=" Results "value=" "/>

var content = $ (' #content '). Val ();
if (content.trim () = = ")
Alert (' empty ');

The above wording in Firefox will not error, but in IE will error

So write to the following format:

Copy the Code code as follows:

<input type= "text" name= "id=" Results "value=" "/>

var content = $ (' #results '). Val ();
if ($.trim (content) = = ")
Alert (' empty ');

Or

Copy the Code code as follows:

var content = $ (' #content '). Val ();
if (jquery.trim (content) = = ")
Alert (' empty ');

jquery $.trim () Method Usage Introduction