HTML DOM window customElements property

The customElements property returns a reference to a CustomElementRegistry object, which can be further used to register new custom elements and hence get information about previously registered custom elements.

Syntax:

var obj = window.customElements;

Return Value:

• CustomElementRegistry Object: This property returns an object which contains details about Custom Elements defined.

Example: In this example, we will get information about custom elements and will create a custom element using define() method.

Output:

Before Button Click:

👁 Image

After Button Click:

👁 Image

customElements object:

👁 Image

Supported Browsers:

• Google Chrome 54 and above
• Edge 79 and above
• Firefox 63 and above
• Safari 10.1 and above
• Opera 41 and above
• Internet Explorer not supported