How to remove an added list items using JavaScript ?

06 Jul, 2021
In the following article,  we dynamically add and remove list items using JavaScript. We are using JavaScript to add and/or remove list items dynamically which means that if we run our webpage it will show the option of adding and removing items using buttons.
 Approach: In the webpage, one input text box is given for the user entry to add a list item. Two buttons are given to add a list item and also remove a list item. The list items are added or removed using JavaScript functions addItem() and removeItem(). The list items are created using document.createElement() method and to create a text node, document.createTextNode()  method is used and then this node is appended using appendChild() method. The list item is deleted using the removeChild() method.
The in-built functions used are listed below.
Create new elements: We can create new elements using the document.createElement() function. It will create elements dynamically.
Append element: We can append elements using the function appendchild(). 
Create text node: We can create a text node using the document.createTextNode() element.  HTML consists of both an element node and a text node. So createTextNode() method creates a text node with the specified text.
Remove existing element: We can remove a child from the created list by using removechild() function.
Example: The following code demonstrates the addition and deletion of list items using JavaScript functions.
HTML
<!DOCTYPE html><html lang="en"> <head>     <style>        #candidate {            border-radius: 20%;            border-color: aquamarine;            box-sizing: border-box;        }                 .buttonClass {            border-radius: 20%;            border-color: aqua;            border-style: inherit;        }                 button:hover {            background-color: green;        }    </style></head> <body>    <ul id="list"></ul>     <input type="text" id="candidate" />    <button onclick="addItem()" class="buttonClass">    Add item</button>    <button onclick="removeItem()" class="buttonClass">    Remove item</button>     <script>        function addItem() {            var a = document.getElementById("list");            var candidate = document.getElementById("candidate");            var li = document.createElement("li");            li.setAttribute('id', candidate.value);            li.appendChild(document.createTextNode(candidate.value));            a.appendChild(li);        }         // Creating a function to remove item from list        function removeItem() {             // Declaring a variable to get select element            var a = document.getElementById("list");            var candidate = document.getElementById("candidate");            var item = document.getElementById(candidate.value);            a.removeChild(item);        }    </script></body> </html>
Output: Now, click on add item to add any item to the list. Click on remove item to delete any item from the list.
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