Expanda acordeão específico do URL

Se eu usar o endereço "www.xxxxxx.com/test.html#chgd", o segundo acordeão deverá estar em expansão.

Eu usei o código-fonte deste site 'Bootstrap 3 expande acordeão a partir do URL'mas não funciona neste contexto.

Não sei qual é o problema com base no código-fonte para expandir o segundo acordeão com base no URL?

<!DOCTYPE html>
<html lang="en">
<head>
    <title></title>
    <link href="C:\Users\h\Desktop\test\bootstrap-theme.css" rel="stylesheet"/>
    <link href="C:\Users\h\Desktop\test\bootstrap.css" rel="stylesheet"/>

    <script src="C:\Users\h\Desktop\test\jquery-1.11.2.min.js"></script>
    <script src="C:\Users\h\Desktop\test\bootstrap.min.js"></script>
    <script>
        var url = document.location.toString();
        if (url.match('#')) {
            $('#' + url.split('#')[1]).addClass('in');
        }
    </script>
</head>

<body>
    <div id="accordion" class="accordion-group">
        <div class="panel">
            <h4 id="cs" class="accordion-title"><a data-toggle="collapse" data-parent="#accordion" data-target="#cs_c">Child
                Survival: Boosting Immunity and Managing Diarrhoea</a></h4>
            <div id="cs_c" class="accordion-collapse collapse in">
                <p>...</p>
            </div>

            <h4 id="chgd" class="accordion-title"><a data-toggle="collapse" data-parent="#accordion" data-target="#chgd_c">Child
                Health, Growth and Development: Preventing Mental Impairment with Iodine and Iron</a></h4>
            <div id="chgd_c" class="accordion-collapse collapse">
                <p>...</p>
            </div>

            <h4 id="wmnh" class="accordion-title"><a data-toggle="collapse" data-parent="#accordion" data-target="#wmnh_c">Women’s
                and Newborn Survival and Health: Iron Supplementation and Food Fortification</a></h4>
            <div id="wmnh_c" class="accordion-collapse collapse">
                <p>...</p>
            </div>
        </div>
    </div>
</body>
</html>

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