jquery find link that has the same ID value than the CLASS value of another element

var currentId = $('#nav a').attr('id');
var currentClass = $('#circle-inner h1').attr('class');
if(currentClass == currentId) {
  $('#nav a').addClass("cu开发者_运维知识库rrent");
}

i want to compare the two valuesand if they are the same do something (addClass)

that is what i'm trying to achieve with that piece of code...

i cannot give the value of the class. there are too many.

thanks.

If you element has more than one class use hasClass method

Does #circle-inner h1 only have one class?

var currentClass = $('#circle-inner h1').attr('class');
$("#nav a#" + currentClass).addClass("current");

or if the h1 has more than one class, or to reverse the check try:

  $("#nav a").each(function (i) {
  var currentId = $(this).attr('id');
    if ($('#circle-inner h1').hasClass(currentId)) {
      $(this).addClass('current');
     }
  });

Instead of direct equality try a RegExp test instead:

var currentId = $('#nav a').attr('id');
var currentClass = $('#circle-inner h1').attr('class');
if(new RegExp(currentClass).test(currentId)) {
  $('#nav a').addClass("current");
}