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DOM createElement()

We may want to add a new item to an HTML document. The first step is to create the node (element) that you want to add, the next step is to find the location in the document where you want to add it, and the last step is to do so. The syntax used to create a node is very simple, you only call a method (method) of the document object.

  • createElement(): Creates a node of the specified name.
  • createTextNodeallows you to add text to the node you specify.
  • appendChild(): allows you to set where you want to node.
  • insertBefore()Used to add / move an existing item.
  • removeChild(): removes a specified child node of the specified item.
  • replaceChild():replaces a child node of the specified node with another node.
  • cloneNode(): creates a copy of a node, and returns the copy.
  • adoptNode(): This method is used to accept a node in another document.
  • hasChildNodes(): Returns true if the specified node has a child node. Returns a false node if the specified node does not have a child node.
  • importNode(): This method imports another node from a document.

HTML DOM createElement () Method

The JavaScript createElement () method creates a node of the specified name. This method is a widely used method.

Syntax:

document.createElement(nodename)

  • nodename: The name of the item you want to create.

createElement Examples

Example 1

// Create a p element
 
var el = document.createElement ("P");
 
// Create a text element
 
var t = document.createTextNode ("javaScript lesson");
 
// add text to text
 
el.appendchild (t);
 
// id = add "p" to div.
 
document.getElementById ( "test"). appendChild (el);

Example 2

createElement example
<body>

    <button onclick="divFunction()">ADD div</button>

    <script>

        function divFunction() {
            let div = document.createElement("div");
            document.body.appendChild(div)
        }

    </script>
</body>

Example 3

createElement Example
<body>

    <button onclick="pFunction()">ADD p</button>

    <script>

        function pFunction() {
            let p = document.createElement("p");
            let txt = document.createTextNode("paragraph");
            p.appendChild(txt);
            document.body.appendChild(p);
        }

    </script>
</body>

Example 4

createElement example
<body>

    <button onclick="navFunction()">ADD nav</button>
    <div id="box"></div>

    <script>

        function navFunction() {
            let nav = document.createElement("nav");
            document.getElementById("box").appendChild(nav)
        }

    </script>
</body>

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