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Navigators and Indicators in JavaScript Carousel control

08 May 2023 / 6 minutes to read

The navigators and indicators are used to transition the slides manually.

Show or hide previous and next button

In navigators, the previous and next slide transition buttons are used to perform slide transitions manually. You can show/hide the navigators using the buttonsVisibility property. The possible property values are as follows:

  • Hidden – the navigator’s buttons are not visible.
  • Visible – the navigator’s buttons are visible.
  • VisibleOnHover – the navigator’s buttons are visible only when hovering over the carousel.

The following example depicts the code to show/hide the navigators in the carousel.

Source
Preview
app.ts
index.html
styles.css
Copied to clipboard
import { Carousel } from "@syncfusion/ej2-navigations";

const carouselObj: Carousel = new Carousel({
  items: [
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/cardinal.png" alt="cardinal" style="height:100%;width:100%;" /><figcaption class="img-caption">Cardinal</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/hunei.png" alt="kingfisher" style="height:100%;width:100%;" /><figcaption class="img-caption">Kingfisher</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/costa-rica.png" alt="keel-billed-toucan" style="height:100%;width:100%;" /><figcaption class="img-caption">Keel-billed-toucan</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/kaohsiung.png" alt="yellow-warbler" style="height:100%;width:100%;" /><figcaption class="img-caption">Yellow-warbler</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/bee-eater.png" alt="bee-eater" style="height:100%;width:100%;" /><figcaption class="img-caption">Bee-eater</figcaption></figure>' }
  ],
  buttonsVisibility: "Visible",
});
carouselObj.appendTo("#carousel");
Copied to clipboard
<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>Essential JS 2</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
    <meta name="description" content="Essential JS 2" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/material.css" rel="stylesheet" />

    <!--style reference from app-->
    <link href="styles.css" rel="stylesheet" />

    <!--system js reference and configuration-->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>
<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <div class="control-section">
            <div class="control-container">
                <div id="carousel"></div>
            </div>
        </div>
    </div>
</body>

</html>
Copied to clipboard
.control-container {
  height: 360px;
  margin: 0 auto;
  width: 600px;
}

.img-container {
  height: 100%;
  margin: 0;
}

.img-caption {
  color: #fff;
  font-size: 1rem;
  position: absolute;
  bottom: 3rem;
  width: 100%;
  text-align: center;
}

Show previous and next button on hover

In the carousel, you can show the previous and next buttons only on mouse hover using the buttonsVisibility property. The following example depicts the code to show the navigators on mouse hover in the carousel.

Source
Preview
app.ts
index.html
styles.css
Copied to clipboard
import { Carousel } from "@syncfusion/ej2-navigations";

const carouselObj: Carousel = new Carousel({
  items: [
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/cardinal.png" alt="cardinal" style="height:100%;width:100%;" /><figcaption class="img-caption">Cardinal</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/hunei.png" alt="kingfisher" style="height:100%;width:100%;" /><figcaption class="img-caption">Kingfisher</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/costa-rica.png" alt="keel-billed-toucan" style="height:100%;width:100%;" /><figcaption class="img-caption">Keel-billed-toucan</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/kaohsiung.png" alt="yellow-warbler" style="height:100%;width:100%;" /><figcaption class="img-caption">Yellow-warbler</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/bee-eater.png" alt="bee-eater" style="height:100%;width:100%;" /><figcaption class="img-caption">Bee-eater</figcaption></figure>' }
  ],
  buttonsVisibility: "VisibleOnHover",
});
carouselObj.appendTo("#carousel");
Copied to clipboard
<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>Essential JS 2</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
    <meta name="description" content="Essential JS 2" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/material.css" rel="stylesheet" />

    <!--style reference from app-->
    <link href="styles.css" rel="stylesheet" />

    <!--system js reference and configuration-->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>
<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <div class="control-section">
            <div class="control-container">
                <div id="carousel"></div>
            </div>
        </div>
    </div>
</body>

</html>
Copied to clipboard
.control-container {
  height: 360px;
  margin: 0 auto;
  width: 600px;
}

.img-container {
  height: 100%;
  margin: 0;
}

.img-caption {
  color: #fff;
  font-size: 1rem;
  position: absolute;
  bottom: 3rem;
  width: 100%;
  text-align: center;
}

Previous and next button template

Template options are provided to customize the previous button using previousButtonTemplate and the next button using nextButtonTemplate. The following example depicts the code for applying the template to previous and next buttons in the carousel.

Source
Preview
app.ts
index.html
styles.css
Copied to clipboard
import { Carousel } from "@syncfusion/ej2-navigations";
import { Button } from "@syncfusion/ej2-buttons";

const carouselObj: Carousel = new Carousel({
  items: [
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/cardinal.png" alt="cardinal" style="height:100%;width:100%;" /><figcaption class="img-caption">Cardinal</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/hunei.png" alt="kingfisher" style="height:100%;width:100%;" /><figcaption class="img-caption">Kingfisher</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/costa-rica.png" alt="keel-billed-toucan" style="height:100%;width:100%;" /><figcaption class="img-caption">Keel-billed-toucan</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/kaohsiung.png" alt="yellow-warbler" style="height:100%;width:100%;" /><figcaption class="img-caption">Yellow-warbler</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/bee-eater.png" alt="bee-eater" style="height:100%;width:100%;" /><figcaption class="img-caption">Bee-eater</figcaption></figure>' }
  ],
  previousButtonTemplate: '<button id="previous"></button>',
  nextButtonTemplate: '<button id="next"></button>',
});
carouselObj.appendTo("#carousel");

const prevBtn: Button = new Button({
  cssClass: "e-flat e-round",
  iconCss: "e-icons e-chevron-left-double",
});
prevBtn.appendTo("#previous");

const nextBtn: Button = new Button({
  cssClass: "e-flat e-round",
  iconCss: "e-icons e-chevron-right-double",
});
nextBtn.appendTo("#next");
Copied to clipboard
<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>Essential JS 2</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
    <meta name="description" content="Essential JS 2" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/material.css" rel="stylesheet" />

    <!--style reference from app-->
    <link href="styles.css" rel="stylesheet" />

    <!--system js reference and configuration-->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>
<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <div class="control-section">
            <div class="control-container">
                <div id="carousel"></div>
            </div>
        </div>
    </div>
</body>

</html>
Copied to clipboard
.control-container {
  height: 360px;
  margin: 0 auto;
  width: 600px;
}

.img-container {
  height: 100%;
  margin: 0;
}

.img-caption {
  color: #fff;
  font-size: 1rem;
  position: absolute;
  bottom: 3rem;
  width: 100%;
  text-align: center;
}

Indicators

Show or hide indicators

In indicators, the total slides and current slide state have been depicted. You can show/hide the indicators using the showIndicators property. The following example depicts the code to show/hide the indicators in the carousel.

Source
Preview
app.ts
index.html
styles.css
Copied to clipboard
import { Carousel } from "@syncfusion/ej2-navigations";

const carouselObj: Carousel = new Carousel({
  items: [
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/cardinal.png" alt="cardinal" style="height:100%;width:100%;" /><figcaption class="img-caption">Cardinal</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/hunei.png" alt="kingfisher" style="height:100%;width:100%;" /><figcaption class="img-caption">Kingfisher</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/costa-rica.png" alt="keel-billed-toucan" style="height:100%;width:100%;" /><figcaption class="img-caption">Keel-billed-toucan</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/kaohsiung.png" alt="yellow-warbler" style="height:100%;width:100%;" /><figcaption class="img-caption">Yellow-warbler</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/bee-eater.png" alt="bee-eater" style="height:100%;width:100%;" /><figcaption class="img-caption">Bee-eater</figcaption></figure>' }
  ],
  showIndicators: true,
});
carouselObj.appendTo("#carousel");
Copied to clipboard
<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>Essential JS 2</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
    <meta name="description" content="Essential JS 2" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/material.css" rel="stylesheet" />

    <!--style reference from app-->
    <link href="styles.css" rel="stylesheet" />

    <!--system js reference and configuration-->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>
<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <div class="control-section">
            <div class="control-container">
                <div id="carousel"></div>
            </div>
        </div>
    </div>
</body>

</html>
Copied to clipboard
.control-container {
  height: 360px;
  margin: 0 auto;
  width: 600px;
}

.img-container {
  height: 100%;
  margin: 0;
}

.img-caption {
  color: #fff;
  font-size: 1rem;
  position: absolute;
  bottom: 3rem;
  width: 100%;
  text-align: center;
}

Indicators Template

Template option is provided to customize the indicators by using the indicatorTemplate property. The following example depicts the code for applying a template to indicators in the carousel.

Source
Preview
app.ts
index.html
styles.css
Copied to clipboard
import { Carousel } from "@syncfusion/ej2-navigations";

const carouselObj: Carousel = new Carousel({
  items: [
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/cardinal.png" alt="cardinal" style="height:100%;width:100%;" /><figcaption class="img-caption">Cardinal</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/hunei.png" alt="kingfisher" style="height:100%;width:100%;" /><figcaption class="img-caption">Kingfisher</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/costa-rica.png" alt="keel-billed-toucan" style="height:100%;width:100%;" /><figcaption class="img-caption">Keel-billed-toucan</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/kaohsiung.png" alt="yellow-warbler" style="height:100%;width:100%;" /><figcaption class="img-caption">Yellow-warbler</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/bee-eater.png" alt="bee-eater" style="height:100%;width:100%;" /><figcaption class="img-caption">Bee-eater</figcaption></figure>' }
  ],
  indicatorsTemplate: "#indicatorTemplate",
});
carouselObj.appendTo("#carousel");
Copied to clipboard
<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>Essential JS 2</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
    <meta name="description" content="Essential JS 2" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/material.css" rel="stylesheet" />

    <!--style reference from app-->
    <link href="styles.css" rel="stylesheet" />

    <!--system js reference and configuration-->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>
<script type="text/x-template" id="indicatorTemplate">
    <div class="indicator" indicator-index="${index}"></div>
  </script>
<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <div class="control-section">
            <div id="prev"></div>
            <div id="next"></div>
            <div class="control-container">
                <div id="carousel"></div>
            </div>
        </div>
    </div>
</body>

</html>
Copied to clipboard
.control-container {
  height: 360px;
  margin: 0 auto;
  width: 600px;
}

.img-container {
  height: 100%;
  margin: 0;
}

.img-caption {
  color: #fff;
  font-size: 1rem;
  position: absolute;
  bottom: 3rem;
  width: 100%;
  text-align: center;
}

.e-carousel .e-carousel-indicators .e-indicator-bars .e-indicator-bar.e-template .indicator {
  background-color: #ececec;
  border-radius: 0.25rem;
  cursor: pointer;
  height: 0.5rem;
  margin: 0.5rem;
  width: 1.5rem;
}

.e-carousel .e-carousel-indicators .e-indicator-bars .e-indicator-bar.e-active .indicator {
  background-color: #3c78ef;
}

Showing preview of slide in indicator

You can customize the indicators by showing the preview image of each slide using the indicatorTemplate property. The following example depicts the code for showing the preview image using a template for indicators in the carousel.

Source
Preview
app.ts
index.html
styles.css
Copied to clipboard
import { Carousel } from "@syncfusion/ej2-navigations";

(window as TemplateFunction).getContent = (index: number) => {
  const slides: string[] = ["Slide 1", "Slide 2", "Slide 3", "Slide 4", "Slide 5"];
  return slides[index];
};
interface TemplateFunction extends Window {
  getContent?: Function;
}

const carouselObj: Carousel = new Carousel({
  items: [
{ template: '<div class="slide-content">Slide 1</div>' },
{ template: '<div class="slide-content">Slide 2</div>' },
{ template: '<div class="slide-content">Slide 3</div>' },
{ template: '<div class="slide-content">Slide 4</div>' },
{ template: '<div class="slide-content">Slide 5</div>' },
  ],
  indicatorsTemplate: "#indicatorTemplate",
});
carouselObj.appendTo("#carousel");
Copied to clipboard
<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>Essential JS 2</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
    <meta name="description" content="Essential JS 2" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/material.css" rel="stylesheet" />

    <!--style reference from app-->
    <link href="styles.css" rel="stylesheet" />

    <!--system js reference and configuration-->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>
<script type="text/x-template" id="indicatorTemplate">
    <div class="indicator" indicator-index="${index}">
        <div class="preview-content">${getContent(data.index)}</div>
    </div>
</script>
<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <div class="control-section">
            <div id="prev"></div>
            <div id="next"></div>
            <div class="control-container">
                <div id="carousel"></div>
            </div>
        </div>
    </div>
</body>

</html>
Copied to clipboard
.control-container {
  background-color: #adb5bd;
  height: 300px;
  margin: 0 auto;
  width: 500px;
}

.e-carousel .slide-content {
  align-items: center;
  display: flex;
  font-size: 1.25rem;
  height: 100%;
  justify-content: center;
}

.e-carousel .e-carousel-items,
.e-carousel .e-carousel-navigators {
  height: calc(100% - 3rem);
}

.e-carousel .e-carousel-navigators .e-previous,
.e-carousel .e-carousel-navigators .e-next,
.e-carousel .e-carousel-navigators .nav-btn {
  padding: 0;
}

.e-carousel .e-carousel-navigators .nav-btn:active,
.e-carousel .e-carousel-navigators .nav-btn:focus,
.e-carousel .e-carousel-navigators .nav-btn:hover {
  background-color: transparent !important;
  color: inherit;
}

.e-carousel .e-carousel-navigators svg {
  fill: none;
  stroke: currentColor;
  stroke-linecap: square;
  stroke-width: 8px;
  height: 2rem;
  vertical-align: middle;
  width: 2rem;
}

.e-carousel .e-carousel-navigators .e-previous svg {
  transform: rotate(180deg);
}

.e-carousel .e-carousel-indicators .e-indicator-bars .e-indicator-bar .indicator {
  background-color: #adb5bd;
  border: 1px solid black;
  border-radius: 0.25rem;
  cursor: pointer;
  height: 3.5rem;
  margin: 0.5rem;
  width: 5rem;
}

.e-carousel .e-carousel-indicators .e-indicator-bars .e-indicator-bar.e-active .indicator {
  background-color: #c1cdda;
}

.preview-content {
  align-items: center;
  display: flex;
  height: 100%;
  justify-content: center;
}

Play button

Show or hide the play button

In the carousel, autoPlay actions have been controlled by using the showPlayButton property in the user interface. When you enable this property, the slide transitions are controlled using this play and pause button. The following example depicts the code to show the play button in the carousel.

Source
Preview
app.ts
index.html
styles.css
Copied to clipboard
import { Carousel } from "@syncfusion/ej2-navigations";

const carouselObj: Carousel = new Carousel({
  items: [
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/cardinal.png" alt="cardinal" style="height:100%;width:100%;" /><figcaption class="img-caption">Cardinal</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/hunei.png" alt="kingfisher" style="height:100%;width:100%;" /><figcaption class="img-caption">Kingfisher</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/costa-rica.png" alt="keel-billed-toucan" style="height:100%;width:100%;" /><figcaption class="img-caption">Keel-billed-toucan</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/kaohsiung.png" alt="yellow-warbler" style="height:100%;width:100%;" /><figcaption class="img-caption">Yellow-warbler</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/bee-eater.png" alt="bee-eater" style="height:100%;width:100%;" /><figcaption class="img-caption">Bee-eater</figcaption></figure>' }
  ],
  showPlayButton: true,
});
carouselObj.appendTo("#carousel");
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<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>Essential JS 2</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
    <meta name="description" content="Essential JS 2" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/material.css" rel="stylesheet" />

    <!--style reference from app-->
    <link href="styles.css" rel="stylesheet" />

    <!--system js reference and configuration-->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>
<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <div class="control-section">
            <div class="control-container">
                <div id="carousel"></div>
            </div>
        </div>
    </div>
</body>

</html>
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.control-container {
  height: 360px;
  margin: 0 auto;
  width: 600px;
}

.img-container {
  height: 100%;
  margin: 0;
}

.img-caption {
  color: #fff;
  font-size: 1rem;
  position: absolute;
  bottom: 3rem;
  width: 100%;
  text-align: center;
}

Play button template

Template option is provided to customize the play button by using the playButtonTemplate property. The following example depicts the code for applying a template to play button in the carousel.

Source
Preview
app.ts
index.html
styles.css
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import { Carousel } from "@syncfusion/ej2-navigations";
import { Button } from "@syncfusion/ej2-buttons";

const carouselObj: Carousel = new Carousel({
  items: [
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/cardinal.png" alt="cardinal" style="height:100%;width:100%;" /><figcaption class="img-caption">Cardinal</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/hunei.png" alt="kingfisher" style="height:100%;width:100%;" /><figcaption class="img-caption">Kingfisher</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/costa-rica.png" alt="keel-billed-toucan" style="height:100%;width:100%;" /><figcaption class="img-caption">Keel-billed-toucan</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/kaohsiung.png" alt="yellow-warbler" style="height:100%;width:100%;" /><figcaption class="img-caption">Yellow-warbler</figcaption></figure>' },
{ template: '<figure class="img-container"><img src="https://ej2.syncfusion.com/products/images/carousel/bee-eater.png" alt="bee-eater" style="height:100%;width:100%;" /><figcaption class="img-caption">Bee-eater</figcaption></figure>' }
  ],
  showPlayButton: true,
  playButtonTemplate: '<div id="play"></div>',
});
carouselObj.appendTo("#carousel");

const button: Button = new Button({ cssClass: "e-info", content: "Pause" });
button.appendTo("#play");
button.element.onclick = (): void => {
  if (carouselObj.autoPlay) {
button.content = "Play";
carouselObj.autoPlay = false;
  } else {
button.content = "Pause";
carouselObj.autoPlay = true;
  }
};
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<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>Essential JS 2</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
    <meta name="description" content="Essential JS 2" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/material.css" rel="stylesheet" />

    <!--style reference from app-->
    <link href="styles.css" rel="stylesheet" />

    <!--system js reference and configuration-->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>
<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <div class="control-section">
            <div id="prev"></div>
            <div id="next"></div>
            <div class="control-container">
                <div id="carousel"></div>
            </div>
        </div>
    </div>
</body>

</html>
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.control-container {
  background-color: #e5e5e5;
  height: 360px;
  margin: 0 auto;
  width: 600px;
}

.img-container {
  height: 100%;
  margin: 0;
}

.img-caption {
  color: #fff;
  font-size: 1rem;
  position: absolute;
  bottom: 3rem;
  width: 100%;
  text-align: center;
}
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