jQuery - 通过点击另一个div来获得动态div的类

Question

正如标题所示，我想通过单击另一个div（“div.secondclass”）来获得动态div的类。这里是我的代码：

$(document).ready(function() { 
    $("div.secondclass").click(function() { 
     firstclass=$('#firstid').attr('class'); 
     alert("the class of the 1st div is ="+firstclass); 
    }); 
}); 

Answer 1

$(document).ready(function() { 
    $("div.secondclass").click(function() { 
     var aClass = $('#firstid')[0] 
          .className 
          .replace(/[\n\t\r]/g, " ") 
          .replace(/^\s+|\s+$/g, "") 
          .split(" "); 
     alert("The div with the id firstid has got these classes: " + aClass.join(", ")); 
    }); 
});