Determine currently opened Semantic UI accordion index

问题

Trying to figure out how to determine currently open part of Semantic UI accordion (http://semantic-ui.com/modules/accordion.html):

This works for jQuery UI Accordion, does not work for Semantic UI:

$("#accordion").accordion('option','active');

Also tried below code, but always returns "1":

    $('#selector').accordion({
        onChange: function() {  
            alert("selected" + $('#selector').index() );
        }
    });

回答1:

Inside the onChange callback, this returns selected content' container as a jQuery object. So you can use it with the index() method, filtered by content selector. Try with next, it works for me:

$('.ui.accordion').accordion({
    onChange: function () {
        alert(this.index(".content"));
        console.log(this.index(".content"));
    }
});

Working example: http://jsfiddle.net/n8o1ps0t/

来源：https://stackoverflow.com/questions/25573315/determine-currently-opened-semantic-ui-accordion-index