jQuery how to get data-value where class active?

Question

I want to get data-value where the class is active. when I am clicking on nav-tabs it alerting undefined How can I resolve this error? Please help me.

HTML:

<ul class="nav nav-tabs">
  <li class="active" data-value="buy"><a data-toggle="tab" href="#home">BUY</a></li>
  <li data-value="rent"><a data-toggle="tab" href="#home">RENT</a></li>
  <li><a href="Post_Property.html">SALE</a></li>
</ul>

jQuery:

  $(".nav-tabs").click(function(){
    alert($(".active").attr("data-value"));
  })

Answer 1

 $('.nav-tabs').on('shown.bs.tab', function (e) { alert($(".active").attr("data-value")); }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script><link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script> <ul class="nav nav-tabs"> <li class="active" data-value="buy"><a data-toggle="tab" href="#home">BUY</a></li> <li data-value="rent"><a data-toggle="tab" href="#home">RENT</a></li> <li><a href="Post_Property.html">SALE</a></li> </ul> 

I had updated the changes in the code u can use shown.bs.tab method for bootstrap.

Answer 2

You can get data attribute like:

$(".active").data("value");

it will return the data-value and in your case the DOM is not properly traversed. The proper code is:

$(".nav-tabs").click(function(){
    alert($(this).find(".active").data("value"));
})

as .active is the child of .nav-tabs , so you have to traverse it.

Answer 3

Simply traverse and get the active tag, like this:

$(".nav-tabs").click(function(){
    alert($(this).find(".active").attr("data-value"));
});

Also, instead of attr('data-value') , you can use data("value") .