HTML DOM THead Object

Last Updated : 02 Mar, 2022

The HTML DOM THead object is used to represent the HTML <thead> element. It helps in giving reference to access the <thead> element in the HTML document.

Access a THead object:

We can easily access a <thead> element in the document by using HTML getElementById() method.

Syntax:

document.getElementById()

Property Values

align: Set the alignment of the text content.
valign: Set the vertical alignment of the text content.
char: Set the alignment of content inside the <thead> element to a character.
charoff: It is used to sets the number of characters that will be aligned from the character specified by the char attribute. The value of these attributes is in numeric form.

Example 1: Below HTML code illustrates how to change the bgcolor of the <thead> element.

HTML

<!DOCTYPE html>
<html>
 
<head>
    <style>
        table,
        th,
        td {
            border: 1px solid green;
        }
    </style>
</head>
 
<body>
    <center>
    <h1>
        GeeksforGeeks
    </h1>
     
<p><b>HTML DOM THead Object </b></p>
 
    <table>
        <thead id="tableID" bgcolor="43e">
            <tr>
                <td>Username</td>
                <td>User_Id</td>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td>Shashank</td>
                <td>@shashankla</td>
            </tr>
            <tr>
                <td>GeeksforGeeks</td>
                <td>@geeks</td>
            </tr>
        </tbody>
    </table>
     
<p>
        Click on the button to change the 
        background color of thead element. 
    </p>
 
    <button onclick="btnclick()"> 
        Click here 
    </button>
    <p id="paraID"></p>
 
    </center>
    <script>
        function btnclick() {
            var thead = document.getElementById("tableID");
            thead.style.backgroundColor = "red";
        }
    </script>
</body>
 
</html>

Output:

Create a THead Object: We can create a THead Object by using the document.createElement() method.

Syntax:

document.createElement()

Example 2:

HTML

<!DOCTYPE html>
<html>
     
<head>
    <style>
        table, th, td {
            border: 1px solid green;
        }
    </style>
</head>
 
<body>
   <center>
    <h1>
        GeeksforGeeks
    </h1>
         
    <h2>HTML DOM THead object</h2>
    
     <table id ="tableID">
         
     </table>
      
<p>
        Click button to create thead element.
     </p>
 
 
 
    <button onclick="btnclick()">
        Click here
    </button> 
 
    <script>
        function btnclick() {
           /* Create thead element */
           var x = document.createElement("THEAD"); 
          /* Create tr element */
          var y = document.createElement("TR");
          /* Create td element */
          var z = document.createElement("TD");
          z.innerHTML = "Username"; 
          /* Create td element */
          var w = document.createElement("TD");
          w.innerHTML = "Password";
          y.appendChild(z);
          y.appendChild(w);
          x.appendChild(y);
          document.getElementById("tableID").appendChild(x);
        }        
    </script>
</body>
</html>                