Auto close in EJ2 JavaScript Sidebar control

3 Mar 202513 minutes to read

The Sidebar often behaves differently on mobile displays compared to desktop displays. It features a functionality that allows it to be opened or closed based on the specified resolution. This behavior is controlled through the mediaQuery property, allowing you to keep the Sidebar in an expanded or collapsed state only in user-defined resolutions.

In the following sample, mediaQuery is used to close and open the Sidebar based on a specific resolution.

ej.base.enableRipple(true);
//Sidebar initialization
var defaultSidebar = new ej.navigations.Sidebar({
    width: '280px',
    mediaQuery: window.matchMedia('(min-width: 600px)')
});
defaultSidebar.appendTo('#default');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Essential JS 2 Sidebar</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="styles.css" rel="stylesheet">
    <script src="https://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <!-- Sidebar element declaration -->
        <aside id="default">
            <div class="title"> Sidebar </div>
        </aside>
        <!-- end of Sidebar element -->
        <!-- main content declaration -->
        <div>
            <div class="title">Main content</div>
            <div class="sub-title">* Sidebar will collapse in mobile mode automatically</div>
        </div>
    </div>

    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
    <style>
        .header {
            width: 100%;
            height: 40px;
            font-size: 20px;
            line-height: 40px;
            font-weight: 500;
            background: #eee;
            display: inline-block;
        }

        .center-align {
            text-align: center;
            padding: 20px;
        }

        .title {
            text-align: center;
            font-size: 20px;
            padding: 15px;
        }

        .sub-title {
            text-align: center;
            font-size: 14px;
            padding: 10px;
        }

        .center {
            text-align: center;
            display: none;
            font-size: 13px;
            font-weight: 400;
            margin-top: 20px;
        }

        #default {
            background-color: rgb(25, 118, 210);
            color: #ffffff;
        }

        .close-btn:hover {
            color: #fafafa;
        }
    </style>
</body>

</html>
#container {
  visibility: hidden;
}

#loader {
  color: #008cff;
  height: 40px;
  width: 30%;
  position: absolute;
  top: 45%;
  left: 45%;
}

  • In the following sample, the Sidebar will be in an expanded state only in resolutions below 400px.
ej.base.enableRipple(true);
//Sidebar initialization
var defaultSidebar = new ej.navigations.Sidebar({
     mediaQuery: window.matchMedia('(max-width: 400px)'),
     width: "280px"
});
defaultSidebar.appendTo('#default');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Essential JS 2 Sidebar</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="styles.css" rel="stylesheet">
    <script src="https://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <!-- Sidebar element -->
        <aside id="default">
            <div class="title"> Sidebar </div>
        </aside>
        <!-- end of Sidebar element -->
        <!-- main content declaration -->
        <div>
            <div class="title">Main content</div>
            <div class="sub-title"> * Sidebar will open in mobile mode automatically</div>
        </div>
        <!-- end of main content -->
    </div>

    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
    <style>
        .header {
            width: 100%;
            height: 40px;
            font-size: 20px;
            line-height: 40px;
            font-weight: 500;
            background: #eee;
            display: inline-block;
        }

        .center-align {
            text-align: center;
            padding: 20px;
        }

        .title {
            text-align: center;
            font-size: 20px;
            padding: 15px;
        }

        .sub-title {
            text-align: center;
            font-size: 14px;
            padding: 10px;
        }

        .center {
            text-align: center;
            display: none;
            font-size: 13px;
            font-weight: 400;
            margin-top: 20px;
        }

        #default {
            background-color: rgb(25, 118, 210);
            color: #ffffff;
        }

        .close-btn:hover {
            color: #fafafa;
        }
    </style>
</body>

</html>
#container {
  visibility: hidden;
}

#loader {
  color: #008cff;
  height: 40px;
  width: 30%;
  position: absolute;
  top: 45%;
  left: 45%;
}