JS Contains

The contains() method returns true if a node is a descendant of a node.

The contains() method returns false if not.

Syntax

node.contains(node)

Parameters

Parameter	Description
node	Required. The node that may be a descendant of the node.

Return Value

Type	Description
Boolean	`true` - The node is a descendant `false` - The node is NOT a descendant

html file

<!DOCTYPE html>
<html>
<head>
    <title>DOM Navigation</title>
    <style>
        h2{ margin: 0 0 10px; }
        #test{
            background: #ffff00;
            width: 800px;
            min-height: 250px;
            padding: 10px 10px;
            margin: 0 auto;
        }
    </style>
</head>
<body>
    <div id="test">
        <h2>Yahoo Baba : JavaScript Contains Method</h2>
        <p>
            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Explicabo corporis adipisci alias cupiditate officiis consequatur, fuga, amet quos numquam perferendis saepe labore dolorem reiciendis reprehenderit facilis repudiandae praesentium quis delectus voluptates, repellendus recusandae. Itaque consequuntur, corrupti quasi illum iusto perferendis autem blanditiis magni eum, repellendus architecto ratione ipsum molestiae laboriosam.
        </p>
        <div> 
            <p id="abc">
                Lorem ipsum dolor sit amet consectetur, adipisicing elit. Voluptatum magni vel inventore    illum facere tenetur eveniet quam ex nemo eum. Dolorum suscipit corrupti asperiores dicta inventore debitis facilis amet totam neque reprehenderit minima ratione corporis quasi aperiam iusto consectetur nostrum enim optio, quas rerum doloribus nesciunt dolor deleniti. Ea, minima.
            </p>
        </div>
    </div>
    <script src="js/dom-create.js"></script>
</body>
</html>

dom-create.js

/* JavaScript Contains Method*/

var parentElement = document.getElementById("test");

var target = document.getElementById("abc");

var find = parentElement.contains(target);

console.log(find);