Open and close the Sidebar in EJ2 TypeScript Sidebar control

28 Jan 202510 minutes to read

Opening and closing the Sidebar can be achieved using built-in public methods.

  • show(): Method to open the Sidebar.
  • hide(): Method to close the Sidebar.
  • toggle(): Method to toggle between open and close states of the Sidebar.

In the following sample, the toggle method is used to show or hide the Sidebar on a button click.

import { Sidebar } from '@syncfusion/ej2-navigations';
import { enableRipple } from '@syncfusion/ej2-base';
enableRipple(true);

//Sidebar initialization
let defaultSidebar: Sidebar = new Sidebar({
    showBackdrop: false,
    open: function (e) {
        console.log("Sidebar is opened");
    },
    close: function (e) {
        console.log("Sidebar is closed");
    }
});
defaultSidebar.appendTo('#default');
//end of Sidebar initialization

let openEle: HTMLElement = document.querySelector("#open") as HTMLElement;
if(openEle) {
    // Open the Sidebar
    openEle.addEventListener('click', () => {
        defaultSidebar.show();
    });
}

let toggleEle: HTMLElement = document.querySelector("#toggle") as HTMLElement;
if(toggleEle) {
    // Toggle(Open/Close) the Sidebar
    toggleEle.addEventListener('click', () => {
        defaultSidebar.toggle();
    });
}

let closeEle: HTMLElement = document.querySelector("#close") as HTMLElement;
if(closeEle) {
    // Close the Sidebar
    closeEle.addEventListener('click', () => {
        defaultSidebar.hide();
    });
}
<!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/ej2/32.1.19/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/32.1.19/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/32.1.19/ej2-lists/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/32.1.19/ej2-navigations/styles/material.css" rel="stylesheet" />
    <link href="styles.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <!-- Sidebar element declaration-->
        <aside id="default">
            <div class="title"> Sidebar content</div>
            <div class="sub-title">
                Click the button to close the Sidebar.
            </div>
            <div class="center-align">
                <button id="close" class="e-btn close-btn">Close Sidebar</button>
            </div>
        </aside>
        <!-- end of Sidebar element -->
        <!-- main content declaration -->
        <div>
            <div class="title">Main content</div>
            <div class="sub-title"> Click the button to Open the Sidebar.</div>
            <div style="padding:20px" class="center-align">
                <button id="open" class="e-btn e-info">Open Sidebar</button>
            </div>
            <div class="sub-title"> Click the button to open/close the Sidebar.</div>
            <div style="padding:20px" class="center-align">
                <button id="toggle" class="e-btn e-info">Toggle Sidebar</button>
            </div>
        </div>
        <!--end of main content declaration -->

        <style>
            #close,
            #close:hover,
            #close:active,
            #close:focus {
                /* csslint allow: adjoining-classes*/
                background: #fafafa;
                color: black
            }

            .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: 16px;
                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%;
}