Drupal 7 tabs activation using url

Drupal 7 has the field开发者_StackOverflow中文版 group module which contains a horizontal_tab.js file.

Inside this file i found this written

// If the current URL has a fragment and one of the tabs contains an
// element that matches the URL fragment, activate that tab.
if (window.location.hash && $(window.location.hash, this).length) {
   tab_focus = $(window.location.hash, this).closest('.horizontal-tabs-pane');
}

Can someone explain how this would work and what exact url i should call so that a particular tab is activated.

If your current url is something like http://www.example.com/test.htm#part2:

location.hash will give you the hash value i.e #part2

From their comment.

// If the current URL has a fragment and one of the tabs contains an
// element that matches the URL fragment, activate that tab.

Means if the hash value matches, they are trying to find the closest element with class

'.horizontal-tabs-pane'

If so they are focusing the tab.

Our field_group module have one file with name modules/field_group/horizontal-tabs/horizontal-tabs.js

and in this file at line number 38 add this line alert(this.id) Its print Id of perticular tab. After finding this id you can pass in your url with #(hash)

ex : alert(this.id);

After page URL add this ID with # sign so its by default open specified Tab

Combination of Id goes like this

Syntax => node_YourContentTypeName_full_group_YourFieldName

Example => node_product_full_group_item_name

here product is content type and item_name is field name