HTML | DOM Ol type Property

The DOM Ol type Property is used to set or return the type attribute in an ordered list. This attribute defines which type(1, A, a, I and i) of order you want in your list numeric, alphabetic or roman numbers.

Syntax:

It is used to return the type property.
```
olObject.type
```
It is used to set the type property.
```
olObject.type = "1|a|A|i|I"
```

Property Values:

1: This is the default value. It defines the list items in decimal number.(1, 2, 3, 4 .).
a: It defines the list items in alphabetically ordered lowercase letters .(a, b, c, d …)
A: It defines the list items in alphabetically ordered uppercase letters.(A, B, C, D ..)
i: It defines the list items in lowercase roman number order.(i, ii, iii, iv, v, vi …)
I: It defines the list items in uppercase roman number order.(I, II, III, IV, V, VI ..)

Return Value: It returns a string value which represents the kind of marker used in the ordered list.

Example-1: HTML Program that illustrate how to set the type Property.

html

<!DOCTYPE html> 
<html> 
    <head> 
        <title>dom ol type Property</title> 
    </head> 
    <body> 
        <h1 style ="color:green;">GeeksforGeeks</h1> 
        <h2 style="color:green;">DOM ol type Property</h2> 
        <p>List of all computer Subjects are</p> 
        <ol id="GFG"> 
            <li>Data Structures</li> 
            <li>Operating System</li> 
            <li>Python programming</li> 
            <li>DBMS</LI> 
            <li>Computer Network</li> 
        </ol> 
        <button onclick="myGeeks()">Submit</button>
  
        <!-- Script to set the type of list -->
        <script>
          function myGeeks()  {
            var x = document.getElementById("GFG").type = "a";
          }
        </script>
    </body> 
</html>                                 

Output:
Before clicking on the button :

After clicking on the button :

Example-2 : HTML Program that illustrate how to return the type Property.

html

<!DOCTYPE html> 
<html> 
    <head> 
        <title>Dom ol type Property</title> 
    </head> 
    <body> 
        <h1 style ="color:green;">GeeksforGeeks</h1> 
        <h2 style="color:green;">DOM ol type Property</h2> 
        <p>List of all computer Subjects are</p> 
        <ol id="GFG" type="I"> 
            <li>Data Structures</li> 
            <li>Operating System</li> 
            <li>python programming</li> 
            <li>DBMS</li> 
            <li>Computer Network</li> 
        </ol> 
        <button onclick="myGeeks()">Submit</button>
        <p id="sudo" style="font-size:25px;color:green;"></p>
  
        <!-- Script to get the type of list -->
        <script>
          function myGeeks()  {
            var x = document.getElementById("GFG").type;
            document.getElementById("sudo").innerHTML = 
                        "The type of Ordered list:" + x;
          }
        </script>
    </body> 
</html>                                 