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HTML DOM Ol Object
The HTML DOM Ol Object in HTML represents the <ol> element.
Creating a <ol> element
var olObject = document.createElement(“OL”)
Here, “olObject” can have the following properties −
| Property |
Description |
|---|---|
| reversed |
Itsets/returns whether the order of list should be descending orascending (default) |
| start |
Itsets/returns the value of the start attribute of an ordered list |
| type |
Itsets/returns the value of the type attribute of an ordered list |
Let us see an example of Ol start property −
Example
<!DOCTYPE html>
<html>
<head>
<title>HTML DOM Ol start</title>
<style>
form {
width:70%;
margin: 0 auto;
text-align: center;
}
* {
padding: 2px;
margin:5px;
}
input[type="button"] {
border-radius: 10px;
}
ol{
width: 30%;
margin: 0 auto;
}
</style>
</head>
<body>
<form>
<fieldset>
<legend>HTML-DOM-Ol-start</legend>
<h3>Students</h3>
<ol id="orderList" start='2'>
<li>Zampa</li>
<li>Rajesh</li>
<li>Eden</li>
<li>Bina</li>
<li>Alex</li>
<li>Adam</li>
</ol>
<input type="button" onclick="reverseNumbering()" value="Correct list">
<div id="divDisplay"></div>
</fieldset>
</form>
<script>
var divDisplay = document.getElementById("divDisplay");
var studentList = document.getElementById("orderList");
function reverseNumbering() {
studentList.start = '1';
divDisplay.textContent = 'List Corrected';
}
</script>
</body>
</html>
Output
Before clicking ‘Correct List’ button −

After clicking ‘Correct List’ button −

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