jQuery - 通過點擊另一個div來獲得動態div的類

Question

正如標題所示，我想通過單擊另一個div（「div.secondclass」）來獲得動態div的類。這裏是我的代碼：

$(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(", ")); 
    }); 
});