HTML DOM Range startOffset property

The startOffset property returns a number representing an Offset index where the Range starts. This is a read-only property.

if the parent node of Range is a Node of type Text then the offset index will be the number of characters from the start of the Range. For other Node types, the startOffset is the number of child nodes from the start of the startContainer parent node.

Syntax:

start = range.startOffset;


Return Value: It returns a Offset index of starting of the range.

Example: In this example, we will use this property to get startOffset index.



Here the range’s startOffset index in 3rd node from startContainer node.

HTML

filter_none

edit
close

play_arrow

link
brightness_4
code

<html>
<head>
<title>HTML DOM range startOffset property</title>   
</head>
<body>
    <h1>GeeksforGeeks</h1>
     
<p>This is the Range Content</p>
 
</body>
<script>
    let range = document.createRange();
    let referenceNode = document.getElementsByTagName('p').item(0);
    range.selectNode(referenceNode);
    console.log(range.startContainer);
    index=range.startOffset;
    console.log(index);
</script>
</html>

chevron_right


Output: In console, the startOffset Index can be seen.

Supported Browsers: 

  • Google Chrome
  • Edge
  • Firefox
  • Safari
  • Opera
  • Internet Explorer

full-stack-img

My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.


Article Tags :
Practice Tags :


Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.