jquery $.trim () Remove string whitespace

jquery $.trim () Remove string whitespace

Grammar

jQuery.trim()function is used to remove whitespace characters at both ends of a string.

Role

This function removes whitespace characters at the beginning and end of the string (until the first non-whitespace string is encountered). It clears common whitespace characters, including line breaks, spaces, tabs, and so on.

Parameters

If the argument str is not a string type, the function will automatically convert it to a string (its ToString () method is generally called). If the argument str is null or undefined, an empty string ("") is returned.

return value

jQuery.trim()The return value of the function is of type string, which returns the string after the blank string is stripped.

Example & Description

<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" >      $("#showBtn"). Click (function(){            varContent = $ (' #content '). Val (); if($.trim (content) = = ") {alert (Empty);       }   } ); $("#showBtn1"). Click (function(){            varContent = $ (' #content '). Val (); if(Content.trim () = = ") {alert (Empty);                }   } ); </script> </body>
Not for granted, like Java. Use a string-point method.
Error wording:
function () {            var content = $ (' #content '). Val ();          if (Content.trim () = = ") {            alert (' empty ');         }   });
Description: The above wording in Firefox will not error, in IE and Google will error. 
Correct wording:
  function () {            var content = $ (' #content '). Val ();          if ($.trim (content) = = ") {            alert (' empty ');         }   });
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Reference: http://www.365mini.com/page/jquery_trim.htm
jquery $.trim () Remove string whitespace