Bootstrap Collapse - open the given id fragment

Question

Imagine a Bootstrap collapse with 3 parts

<div class="panel-group" id="accordion">
    ...
    <div id="accordionOne" class="panel-heading"></div>
    ...
    <div id="accordionTwo" class="panel-heading"></div>
    ...
    <div id="accordionThree" class="panel-heading"></div>
</div>

Is there a simple way to make the plugin open the given HTTP fragment identifier ?

Example http://myproject/url#accordionTwo would open the second accordion

Answer 1

$("#accordionTwo").collapse('show');

To open the given HTTP fragment identifier, try this:

$(document).ready(function() {
    var anchor = window.location.hash;
    $(".collapse").collapse('hide');
    $(anchor).collapse('show');
});

EDIT:

As pointed by bart in the comments: be careful with targeting .collapse because this class is also used for the navigation bar when the viewport is xs.

Answer 2

This line will open the correct hash

location.hash && $(location.hash + '.collapse').collapse('show');

Answer 3

Yet another solution, a bit smaller and compact:

$(document).ready(function() {
  var anchor = window.location.hash;
  $(anchor).collapse('toggle');
});

Answer 4

For really simple and quick to implement hash routing, you could try something like Routie

routie({
    accordionOne: function() {
        $('#accordionOne').collapse('show');
    },
    accordionTwo: function() {
        $('#accordionTwo').collapse('show');
    },
    accordionThree: function() {
        $('#accordionThree').collapse('show');
    }
});