execute callback after jquery each iteration

问题

How can I properly execute the function f when the each iteration has finished so I can count the elements with that particular class?

This gives 0 instead of 16;

f = check_hfouten();
$.each(rest, function(idx, val,f) { 
  //alert(idx + ': ' + val); 
  $('td.info.'+idx).children('span').addClass('fout').attr('title',val).end().parent('tr').find('input').addClass('overlayed').click(function(){$(this).removeClass('overlayed')});
    $('.tag_cloud.'+idx).addClass('reminder');
}).function(f);

thanks in adv Richard

回答1:

Place the call to f() in the body of the each() callback:

$.each(rest, function(idx, val,f) { 
    //alert(idx + ': ' + val); 
    // -Snip-
    $('.tag_cloud.'+idx).addClass('reminder');
    f();
});

回答2:

each is not asynchronous so you don't need a callback. Just call it in sequence:

f = check_hfouten();

$.each(rest, function(idx, val) { 
  //alert(idx + ': ' + val); 
  $('td.info.'+idx).children('span').addClass('fout').attr('title',val).end().parent('tr').find('input').addClass('overlayed').click(function(){$(this).removeClass('overlayed')});
    $('.tag_cloud.'+idx).addClass('reminder');
});

f();

回答3:

group = $("p")
$.each(group, function(idx, val,f) { 
  alert(idx + ': ' + val); 
  if(idx == group.length - 1)
      alert("done");
});

The messy way :P

http://jsfiddle.net/cwDjL/

来源：https://stackoverflow.com/questions/7001388/execute-callback-after-jquery-each-iteration