Increment value to attr using jquery

I wan开发者_如何学Pythont to increment the value of i . The "for" loop does not work.

$("a[href$='.xls']").appendTo(".xl1").attr('id','xl'+i);

I search all excel files and places them in a container and increment the value of their id.

Thanks Jean

$("a[href$='.xls']").each(function(i) {
  $(this).appendTo(".xl1").attr('id','xl'+i);
})

counting starts from i=0

You can read about function each() here http://api.jquery.com/each/

Using jQuery 1.4.2:

var i=1;
$("a[href$='.xls']")
   .appendTo(".xl1")
   .attr('id', function(){return 'xl' + i++});