Digital Essence Digital Essence - 2 months ago 10
jQuery Question

Trying to truncate a string and replace with ... in JQuery

EDIT 2:

I have just realised that my HTML is only displaying the artist & song, not the album which is why when I had

alert(album);


in there I was getting unexpected results. The jQuery trim is now working as expected.
Blush
Thank you for your answers which I will keep for other scripts.


I'm using JQuery to grab the last 10 songs played from a lastfm user and display them.

I would like to truncate the album names down to x characters and replace with ...

The string is:

album = item.album['#text'];


and it is displayed here:

$current.find('[class=lfm_album]').append(album);


I have tried using:

var shortText = jQuery.trim(album).substring(0, 10)
.split(" ").slice(0, -1).join(" ") + "...";


but it just displays the full album string and no amount of fiddling or javascript seems to work.

EDIT:

I have just tried

album = item.album['#text'];
alert(album);


to see what it thinks is there and I get some very results that don't match any of the other strings produced by the script so really am stuck now!

The full script is as follows:

/*---------------
* jQuery Last.Fm Plugin by Engage Interactive
* Examples and documentation at: http://labs.engageinteractive.co.uk/lastfm/
* Copyright (c) 2009 Engage Interactive
* Version: 1.0 (10-JUN-2009)
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
* Requires: jQuery v1.3 or later
---------------*/

(function($){
$.fn.lastFM = function(options) {

var defaults = {
number: 5,
username: 'xxxxxxx',
apikey: 'xxxxxxxx',
artSize: 'medium',
noart: 'images/noartwork.gif',
onComplete: function(){}
},
settings = $.extend({}, defaults, options);

var lastUrl = 'http://ws.audioscrobbler.com/2.0/?method=user.getrecenttracks&user='+settings.username+'&api_key='+settings.apikey+'&limit='+settings.number+'&format=json&callback=?';
var $this = $(this);

var container = $this.html();

$this.children(':first').remove();

if(settings.artSize == 'small'){imgSize = 0}
if(settings.artSize == 'medium'){imgSize = 1}
if(settings.artSize == 'large'){imgSize = 2}

this.each(function() {

$.getJSON(lastUrl, function(data){
$.each(data.recenttracks.track, function(i, item){

if(item.image[1]['#text'] == ''){
art = settings.noart;
}else{
art = stripslashes(item.image[imgSize]['#text']);
}

url = stripslashes(item.url);
song = item.name;
artist = item.artist['#text'];
album = item.album['#text'];
// this is the part where I try to truncate "album"
var shortText = $.trim(album).substring(0, 10)
.split(" ").slice(0, -1).join(" ") + "...";




$this.append(container);

var $current = $this.children(':eq('+i+')');

$current.find('[class=lfm_song]').append(song);
$current.find('[class=lfm_artist]').append(artist);
//$current.find('[class=lfm_album]').append(album);
$current.find('[class=lfm_album]').append(shortText);
$current.find('[class=lfm_art]').append("<img src='"+art+"' alt='Artwork for "+album+"'/>");
$current.find('a').attr('href', url).attr('title', 'Listen to '+song+' on Last.FM').attr('target', '_blank');

//callback
if(i==(settings.number-1)){
settings.onComplete.call(this);
}

});
});
});
};

//Clean up the URL's
function stripslashes( str ) {
return (str+'').replace(/\0/g, '0').replace(/\\([\\'"])/g, '$1');
}
})(jQuery);


thanks for your help.

Bob Bob
Answer

If you're trying to truncate the album/title by spaces after 10th character you can use the indexOf method

var album = "   This is the're long title of the album    ";

album = $.trim(album); //make sure to trim the album first
if (album.length > 10) {
  //the indexOf will return the position of the first space starting from the 10th
   alert(album.substring(0, album.indexOf(' ',10)) + "...");
}

Source MDN