How-To

@using Syncfusion.EJ2.Navigations;

<div style="display: none">
    <ejs-accordion id="childNested1">
        <e-accordion-accordionitems>
            <e-accordion-accordionitem header="Video-1"></e-accordion-accordionitem>
            <e-accordion-accordionitem header="Video-2"></e-accordion-accordionitem>
        </e-accordion-accordionitems>
    </ejs-accordion>
</div>

<div style="display: none">
    <ejs-accordion id="childNested2">
        <e-accordion-accordionitems>
            <e-accordion-accordionitem header="Music-1"></e-accordion-accordionitem>
            <e-accordion-accordionitem header="Music-2"></e-accordion-accordionitem>
            <e-accordion-accordionitem header="New Playlist" expanded="true" content="#childNested4"></e-accordion-accordionitem>
        </e-accordion-accordionitems>
    </ejs-accordion>
</div>

<div style="display: none">
    <ejs-accordion id="childNested3">
        <e-accordion-accordionitems>
            <e-accordion-accordionitem header="Image-1"></e-accordion-accordionitem>
            <e-accordion-accordionitem header="Image-2"></e-accordion-accordionitem>
        </e-accordion-accordionitems>
    </ejs-accordion>
</div>

<div style="display: none">
    <ejs-accordion id="childNested4">
        <e-accordion-accordionitems>
            <e-accordion-accordionitem header="New Track-1"></e-accordion-accordionitem>
            <e-accordion-accordionitem header="New Track-2"></e-accordion-accordionitem>
        </e-accordion-accordionitems>
    </ejs-accordion>
</div>

<ejs-accordion id="ParentNested" width="50%" expandMode="Multiple">
    <e-accordion-accordionitems>
        <e-accordion-accordionitem header="Videos" expanded="true" content='#childNested1'></e-accordion-accordionitem>
        <e-accordion-accordionitem header="Music" expanded="true" content='#childNested2'></e-accordion-accordionitem>
        <e-accordion-accordionitem header="Images" expanded="true" content='#childNested3'></e-accordion-accordionitem>
    </e-accordion-accordionitems>
</ejs-accordion>

public ActionResult Index()
{
    return View();
}

<div id="element"></div>
<div id="acrdnContnet1" style="display:none">
    <ul style="margin : 0px;padding:0px 16px; list-style-type: none">
        <li>Testing</li>
        <li>Development</li>
    </ul>
</div>
<div id="acrdnContnet2" style="display:none">
    <ul style="margin : 0px;padding:0px 16px; list-style-type: none">
        <li>Mobile</li>
        <li>Web</li>
    </ul>
</div>

<script>
    var ajax = new ej.base.Ajax('../accordion/ajax.html', 'GET', true);
    ajax.send().then();
    ajax.onSuccess = function (data) {
    var ctn2 = data;
//Initialize Accordion component
    var accordion = new ej.navigations.Accordion({
    items: [
      { header: 'Department', content: '#acrdnContnet1' },
      { header: 'Platform', content: '#acrdnContnet2' },
      { header: 'Employee Details', content: ctn2 },
    ]
    });

//Render initialized Accordion component
    accordion.appendTo('#element');
    }
</script>

<style>
    .accordion-control-section {
        margin: 0 10% 0 10%;
    }

    @@media screen and (max-width: 768px) {
        .accordion-control-section {
            margin: 0;
        }
    }
</style>

public ActionResult Index()
{
    return View();
}

@using Syncfusion.EJ2.Navigations

<ejs-accordion id="defaultAccordion" clicked="clicked" expanding="beforeExpand">
    <e-accordion-accordionitems>
        <e-accordion-accordionitem expanded='true' header='ASP.NET' content='Microsoft ASP.NET is a set of technologies in the Microsoft .NET Framework for building Web applications and XML Web services.'></e-accordion-accordionitem>
        <e-accordion-accordionitem header='ASP.NET MVC' content='The Model-View-Controller (MVC) architectural pattern separates an application into three main components: the model, the view, and the controller.'></e-accordion-accordionitem>
        <e-accordion-accordionitem header='JavaScript' content='JavaScript (JS) is an interpreted computer programming language.It was originally implemented as part of web browsers so that client-side scripts could interact with the user, control the browser, communicate asynchronously, and alter the document content that was displayed.'></e-accordion-accordionitem>
    </e-accordion-accordionitems>
</ejs-accordion>

<script type="text/javascript">
    var clickEle;
    function clicked(e) {
        clickEle = e.originalEvent.target.closest('.e-acrdn-header');
    }
    function beforeExpand(e) {
        var expandCount = this.element.querySelectorAll('.e-selected').length;
        var ele = this.element.querySelectorAll('.e-selected')[0];
        var tglIcon = ele;
        if (ele) {
            ele = ele.firstChild;
            tglIcon = ele.querySelector('.e-tgl-collapse-icon');
        }
        if (expandCount === 1 && (ele === clickEle || tglIcon === clickEle)) {
            e.cancel = true;
        }
    }
</script>

public ActionResult Index()
{
    return View();
}

<div id='element'></div>  

<script>
var itemsData = [];
var mapping = { header: 'FirstName', content: 'Notes' };

const SERVICE_URI = 'https://services.odata.org/V4/Northwind/Northwind.svc/Employees';

new ej.data.DataManager({ url: SERVICE_URI, adaptor: new ej.data.ODataV4Adaptor })
    .executeQuery(new ej.data.Query().range(4, 7)).then(function (e) {

    var result = e.result;

    for (var i = 0; i < result.length; i++) {
        itemsData.push({ header: result[i][mapping.header], content: result[i][mapping.content] });
    }

    //Initialize Accordion component
    var accordion = new ej.navigations.Accordion({
        items: itemsData
    });

    //Render initialized Accordion component
    accordion.appendTo('#element');
});
</script>

<style>
    .accordion-control-section {
        margin: 0 10% 0 10%;
    }

    @@media screen and (max-width: 768px) {
        .accordion-control-section {
            margin: 0;
        }
    }
</style>

public ActionResult Index()
{
    return View();
}