list - Sort links with javascript? -

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i'd sort list links alphabetical code:

!doctype html> <html> <head>     <title>sort list items alphabetically javascript</title>     <script type="text/javascript">      function sortunorderedlist(ul, sortdescending) {       if(typeof ul == "string")         ul = document.getelementbyid(ul);        var lis = ul.getelementsbytagname("li");       var vals = [];        for(var = 0, l = lis.length; < l; i++)         vals.push(lis[i].innerhtml);        vals.sort();        if(sortdescending)         vals.reverse();        for(var = 0, l = lis.length; < l; i++)         lis[i].innerhtml = vals[i];     }      window.onload = function() {       var desc = false;       document.getelementbyid("test").onclick = function() {         sortunorderedlist("list", desc);         desc = !desc;         return false;       }     }      </script> </head> <body>     <div id="test"> <a href="#">sort list</a></div>     <ul id="list">         <li>peter</li>         <li>mary</li>         <li>paul</li>         <li>allen</li>         <li>james</li>         <li>vicki</li>         <li>brock</li>         <li>dana</li>         <li>frank</li>         <li>gil</li>         <li>helen</li>     </ul> </body>

but when want add links names, list gets messed (not alphabetical anymore), should change? have absolutely no knowledge javascript, me out here, thank 

<div id="test"> <a href="#">sort list</a></div>     <ul id="list">         <li><a href="tumblr.com/post/57781372261">peter</a></li>         <li><a href="tumblr.com/post/57783141055">mary</a></li>         <li><a href="tumblr.com/post/57781372261">paul</a></li>      </ul>

when links added, posts sorted numbers there, , not names..

you're sorting whatever between <li> , </li>, includes urls, not names. if urls don't sort names, results out of order. in case, you're sorting id numbers in urls.

a simple way solve put names in anchor elements, e.g.

    <li><a data-name="peter" href="tumblr.com/post/57781372261">peter</a></li>     <li><a data-name="mary" href="tumblr.com/post/57783141055">mary</a></li>     <li><a data-name="paul" href="tumblr.com/post/57781372261">paul</a></li>

putting data-name attribute before href attribute should make take precedence.

actually, i'm not totally sure work. innerhtml property contains html after it's been parsed browser, , it's possible reorders attributes. solve this, need provide comparison function sort() finds names , compares them, rather comparing html directly.

here's version compares text only. works dom nodes themselves, rather converting , html.

function comparetext(a1, a2) {     var t1 = a1.innertext, t2 = a2.innertext;     return t1 > t2 ? 1 : (t1 < t2 ? -1 : 0); }  function sortunorderedlist(ul, sortdescending) {   if(typeof ul == "string") {     ul = document.getelementbyid(ul);   }    var lis = ul.getelementsbytagname("li");   var vals = [];    for(var = 0, l = lis.length; < l; i++) {     vals.push(lis[i]);   }    vals.sort(comparetext);    if(sortdescending) {     vals.reverse();   }    ul.innerhtml = '';   for(var = 0, l = vals.length; < l; i++) {     ul.appendchild(vals[i]);   } }

demo


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