Create Element JavaScript

With Javascript, We can easily create different HTML elements and also append them to other elements.

Read Also: Remove Element JavaScript

Suppose we want to insert a new list element inside <ul> elements using javascript.

Here, we create <li> elements using javascript as follows:

<script>
 var newelement = document.createElement("li");
 var selectdiv = document.getElementById("container");
 var selectul = selectdiv.getElementsByTagName("ul")[0];
 selectul.appendChild(newelement);
 newelement.innerHTML = "Errorsea"; 
</script>

Explanation:

First we create a new <li> element using document.createElement() function.
We select <div> tag using id container.
We select <ul> tag using getElementsByTagName() function.
We append this new <li> element inside the <ul> tag.
We insert text inside <li> element.

Example 1

<!DOCTYPE html>
<html>
<head>
    <title>Errorsea - javascript create element</title>
</head>
<body>
 <div id="container">
  <ul>
   <li>Nachiket</li>
   <li>Monil</li>
   <li>Yash</li>
  </ul>
 </div>
 <script>
  var newelement = document.createElement("li");
  var selectdiv = document.getElementById("container");
  var selectul = selectdiv.getElementsByTagName("ul")[0];
  selectul.appendChild(newelement);
  newelement.innerHTML = "Errorsea"; 
 </script>
</body>
</html>

Note: We can insert javascript anywhere inside head or body tag. It is suitable to add javascript at the end of body tag.

We can also insert <li> tag at the beginning of <ul> tag using javascript. Here, we create <li> elements using javascript as follows:

<script>
 var newelement = document.createElement("li");
 var selectdiv = document.getElementById("container");
 var selectul = selectdiv.getElementsByTagName("ul")[0];
 var selectli = selectul.getElementsByTagName("li")[0];
 selectul.insertBefore(newelement,selectli);
 newelement.innerHTML = "Errorsea"; 
</script>

Explanation:

First we create a new <li> element using document.createElement() function.
We select <div> tag using id container.
We select <ul> tag using getElementsByTagName() function.
We select first <li> tag using getElementsByTagName()[0] function.
We append this new <li> element inside the <ul> tag at first position.
We insert text inside <li> element.

Example 2

<!DOCTYPE html>
<html>
<head>
    <title>Errorsea - javascript create element</title>
</head>
<body>
    <div id="container">
        <ul>
            <li>Nachiket</li>
            <li>Monil</li>
            <li>Yash</li>
        </ul>
    </div>
    <script>
        var newelement = document.createElement("li");
        var selectdiv = document.getElementById("container");
        var selectul = selectdiv.getElementsByTagName("ul")[0];
        var selectli = selectul.getElementsByTagName("li")[0];
        selectul.insertBefore(newelement,selectli);
        newelement.innerHTML = "Errorsea"; 
    </script>
</body>
</html>

Yash Panchal

Computer science student, Working as Web Developer and part-time Blogger. Highly interested in AI & ML.