How to prevent collapse panel from closing in bootstrap 3?

Question

JavaScript

I need one of the items to be open all the time bootstrap-3.ru/javascript.php#collapse-examples
did not find such information in the docks.

Answer 1

Run this code on the example page :

$('#accordion a:first').on('click', function(e) {
  if (!$( this ).hasClass('collapsed')) {
    e.preventDefault();
    e.stopPropagation();
  }
});

Bypassing the bootstrap: by clicking on the first header, we disable the execution of the remaining listeners if the first block is open (not closed).