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jquery $.trim () Remove the string space detailed

Source: Internet
Author: User
Tags error code
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Using jquery to remove the front and back spaces of a string is simple, use $.trim (Stringtext);//stringtext is a string to remove a space

$.trim (str)

Back: string;

Description: Remove the string and end space.

Example:


First look at the error code error code:

The code is as follows Copy Code
<input type= "text" name= "id=" Results "value=" "/>"
var content = $ (' #content '). Val ();
if (content.trim () = = ")
Alert (' empty ');

The above writing in Firefox will not be an error, but under IE will be an error

So write the following format:

The code is as follows Copy Code

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

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

Or

var content = $ (' #content '). Val ();

if (jquery.trim (content) = = ")

Alert (' empty ');

An instance

  code is as follows copy code

<! DOCTYPE html>
  <script src= "Http://code.jquery.com/jquery-1.5.js" ></script>
<body>
  <button>show trim example</button>
<script>

$ ("button"). Click (function () {
var str = '      lots of spaces before and AF ter     ";
Alert ("' + str + '");

str = Jquery.trim (str);
Alert ("'" + str + "'-no longer");
});

</script>

</body>

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Related Keywords:
trim space in php trim string how to remove trim space string flex trim string php trim string length sql trim string

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