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This JavaScript is a clever way of automatically truncating the text of a paragraph on your web page, without dividing in the middle of a word. You can truncate the text to a length of your choosing. A JavaScript link is added to expand the text.

Label: truncate, HTML text, HTML, paragraph, expand, length, word

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<script type="text/javascript">
// Created by: Patrick Fitzgerald | http://www.barelyfitz.com/

function truncate() {
  var len = 100;
  var p = document.getElementById('truncateMe');
  if (p) {
    var trunc = p.innerHTML;
    if (trunc.length > len) {

      /* Truncate the content of the P, then go back to the end of the
         previous word to ensure that we don't truncate in the middle of
         a word */
      trunc = trunc.substring(0, len);
      trunc = trunc.replace(/w+$/, '');

      /* Add an ellipses to the end and make it a link that expands
         the paragraph back to its original size */
      trunc += '<a href="#" ' +
        'onclick="this.parentNode.innerHTML=' +
        'unescape(''+escape(p.innerHTML)+'');return false;">' +
        '<span style="font-size: 10px;">[ more ... ]</span></a>';
      p.innerHTML = trunc;
    }
  }
}

// Multiple onload function created by: Simon Willison
// http://simon.incutio.com/archive/2004/05/26/addLoadEvent
function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent(function() {
  truncate();
});
</script>
	<!--
    	This script downloaded from www.JavaScriptBank.com
    	Come to view and download over 2000+ free javascript at www.JavaScriptBank.com
	-->

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<p id="truncateMe">
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean consectetuer. Etiam venenatis. Sed ultricies, pede sit amet aliquet lobortis, nisi ante sagittis sapien, in rhoncus lectus mauris quis massa. Integer porttitor, mi sit amet viverra faucibus, urna libero viverra nibh, sed dictum nisi mi et diam. Nulla nunc eros, convallis sed, varius ac, commodo et, magna. Proin vel risus. Vestibulum eu urna. Maecenas lobortis, pede ac dictum pulvinar, nibh ante vestibulum tortor, eget fermentum urna ipsum ac neque. Nam urna nulla, mollis blandit, pretium id, tristique vitae, neque. Etiam id tellus. Sed pharetra enim non nisl.</p>
	<!--
    	This script downloaded from www.JavaScriptBank.com
    	Come to view and download over 2000+ free javascript at www.JavaScriptBank.com
	-->

Comment (16)
Write

by loan software, 15/08/2010 09:08 AM
Reply

Looks really a good way of truncating a paragraph.Scriting languages are really very much helpfull in designing dynamic websites.

by link building services, 07/09/2010 01:09 PM
Reply

I have many flash games in my PC. Colourful and funny. That's what I like.

by web development, 07/09/2010 05:09 PM
Reply

I've got a fairly basic problem here that I'm hoping there is an easy solution for. When run through the 'truncate' function, leaving off the closing tag, causing untold trouble and chaos. On top of that, the trunctate function counts characters in the tag, so you end up getting somewhat less than what you asked for. So... is there a way to truncate html text properly? Thanks a lot for all your answers. Regards.

by web development, 07/09/2010 06:09 PM
Reply

I just wanted to add that I have a chunk of html code that I want to truncate to a given length... say 20 characters or so. If I use the 'truncate' helper function I end up with unbalanced tags. I hope that all and anything will help me. Thanks!

by Cao Phong, 08/09/2010 08:09 AM
@ web development Reply

yes, this script really causes some problems if you want to truncate a string with HTML tags, because this is just very simple solutions on client, truncate the plain-text strings

for your needs, I think solutions in the server side will be better for the performance of site

by baby furniture, 28/11/2010 09:11 PM
Reply

Thank you for the share, you are awesome..

by best hemorrhoid treatment, 29/12/2010 10:12 PM
Reply

Has anyone try this cool application?

by Mobile Application Development, 26/05/2011 12:05 PM
Reply

Thank you for this It was useful ...

by Brownstone Insurance Brooklyn, 04/06/2011 12:06 AM
Reply

If I use the 'truncate' helper function I end up with unbalanced tags. I hope that all and anything will help me. Thanks!

by App Developers, 07/07/2011 06:07 PM
Reply

Your post is really helpful and informative and I have learnt a great thing from your post. Thanks for sharing and I hope you will share more informative post in future.

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18/05/2008
Patrick Fitzgerald [more]
36,478
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3.95 KBytes

JavaScript Truncate HTML Text

3.8/5 36 votes / 36,478 previews / 16 comment 18/05/2008 This JavaScript is a clever way of automatically truncating the text of a paragraph on your w...JavaScript Truncate HTML Text - Truncate HTML Text

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