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Sidebar with Custom Animation in JavaScript Sidebar control

In the following example, the sidebar is rendered with custom animation effects. Click the buttons available in the main content area to check how the custom animations works with sidebar.

Sidebar will automatically adjust expanding animation to match any custom size specified in CSS styles.

Source
Preview
app.ts
index.html
styles.css
import { Sidebar } from '@syncfusion/ej2-navigations';
import { enableRipple } from '@syncfusion/ej2-base';
enableRipple(true);


let sidebarElement: Sidebar = new Sidebar({
    showBackdrop: true,width: '280px', created: oncreate
});
sidebarElement.appendTo('#sidebar-element');

document.getElementById('zoom').onclick = (): void => {
    sidebarElement.show();
    sidebarElement.element.classList.add("w3-animate-zoom");
}
// Opendoor Effect
document.getElementById('open_door').onclick = (): void => {
    sidebarElement.show();
    let sidebar: Element =document.getElementsByClassName("e-sidebar-overlay")[0];
    sidebar.classList.add("move");
}
//Bottom to Top
document.getElementById('bottom_top').onclick = (): void => {
    sidebarElement.show();
    sidebarElement.element.classList.add("w3-animate-bottom");
}
//Rotate Sidebar
document.getElementById('rotate').onclick = (): void => {
    sidebarElement.show();
    sidebarElement.element.classList.add("rotate");
}
//Sidebar with 3d Animation
document.getElementById('rotate_3d').onclick = (): void => {
    sidebarElement.show();
    sidebarElement.element.classList.add("rotate_3d");
}
//Reverse Slide Out
document.getElementById('reverse').onclick = (): void => {
    sidebarElement.show();
    sidebarElement.element.classList.add("reverse_slide_out");
}

// Close the Sidebar
document.getElementById('close_btn').onclick = (): void => {
    sidebarElement.element.classList.remove("sidebar");
    sidebarElement.element.classList.remove("rotate");
    sidebarElement.element.classList.remove("w3-animate-zoom");
    sidebarElement.element.classList.remove("w3-animate-bottom");
    sidebarElement.element.classList.remove("rotate_3d");
    sidebarElement.element.classList.remove("reverse_slide_out");
    sidebarElement.hide();
};
//Remove the Flickering Effect
function oncreate(): void {
     this.element.style.visibility = '';
}
<!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="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/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>
</head>

<body>
    <div>
        <aside id="sidebar-element" class="sidebar" style="visibility: hidden" >
            <div class="title"> Sidebar content</div>
            <div class="sub-title">
                * Sidebar is rendered with animation effect
            </div>
            <div class="center-align">
                <button id="close_btn" class="e-btn close-btn">Close Sidebar</button>
            </div>
        </aside>
        <!-- end of sidebar element -->
        <!-- main content declaration -->
        <div id="default">
            <div class="title">Sidebar Transitions</div>
            <div class="sub-title"> * Click the below button to render the Sidebar with animation effect.</div>
            <div style="padding:20px" class="center-align">
                <button id="zoom" class="e-btn e-info">Zoom Sidebar</button>
                <button id="open_door" class="e-btn e-info">Open Door </button>
                <button id="bottom_top" class="e-btn e-info">Bottom to Top</button>
            </div>
            <div style="padding:20px" class="center-align">
                <button id="rotate" class="e-btn e-info"> Rotate</button>
                <button id="rotate_3d" class="e-btn e-info"> Rotate 3D</button>
                <button id="reverse" class="e-btn e-info"> Reverse Slide Out</button>
            </div>
        </div> 
    </div>
</body>

</html>
/*Sidebar element styles*/
#sidebar-element {
	background-color: rgb(25, 118, 210);
    color: #ffffff;
}
.sidebar {
    animation-name:rotate_sidebar; 
    animation-duration: 2s
}
@keyframes rotate_sidebar{from{transform:rotateY(150deg)} to{transform:rotateY(360deg)}}
/*main content styles*/
.title {
	text-align: center;
	font-size: 25px;
    padding: 15px;
    font-style: italic;
}

.sub-title {
	text-align: center;
	font-size: 16px;
    padding: 10px;
    font-style: italic;
}

.center-align {
    text-align: center;
}
/*Animation styles*/
.move {
    transform:rotateX(-20deg);
}
#close,#close:hover,#close:active,#close:focus{ /* csslint allow: adjoining-classes*/
	background: #fafafa;
	color:black;
}
#close_btn,#close_btn:hover,#close_btn:active,#close_btn:focus{ /* csslint allow: adjoining-classes*/
	background: #fafafa;
	color:black;
}
.w3-animate-bottom {
    animation-name: animatebottom;
    animation-duration: 1s;
}
@keyframes animatebottom{from {
    margin-top: 100%;
  }
  to {
    margin-top: 0%;
  }}
  
  .w3-animate-zoom {animation-name:animatezoom; 
    animation-duration: 1s}
  @keyframes animatezoom{from{transform:scale(0)} to{transform:scale(1)}}

.rotate {
     animation-name:rotate1; 
    animation-duration: 1s
}
@keyframes rotate1{from{transform:rotateX(150deg)} to{transform:rotateX(360deg)}}
.rotate_3d {
    animation-name:rotate; 
   animation-duration: 1s
}
@keyframes rotate{from{transform:rotateY(150deg)} to{transform:rotateY(360deg)}}

  .reverse_slide_out  {
    
    animation-name: reverse1; 
    animation-duration: 1s
 }
 @keyframes reverse1  {from {
    transform: rotateY(-65deg);
    margin-left: 200px;
  }

  to {
    margin-left: 0%;
  }
}
/*End of animation styles*/