How Do You Move the Caret to the End of a Contenteditable Element?

Moving the Caret to the End of a Contenteditable Entity

Certain web widgets, like Gmail's notes, require the ability to move the cursor to the end of a contenteditable element. While solutions exist for handling inputs, they fail for contenteditable elements due to their distinct nature.

To address this challenge, a solution tailored specifically for contenteditable elements is required. Fortunately, a comprehensive function exists to meet this need: setEndOfContenteditable(). This function employs the judicious use of ranges and selections to manipulate the contenteditable element's text content, ensuring compatibility with various browsers.

Implementation:

The setEndOfContenteditable() function operates across various browser versions:

• Modern Browsers (Firefox, Chrome, Opera, Safari, IE 9 ):
  Utilizes the createRange() method to create an invisible range covering the entire element content. Collapse() is then applied to move the range's end point to the element's final character. Finally, the range is added to the current selection.
• IE 8 and Below:
  Utilizes the createTextRange() method to create an invisible range covering the entire element content. Again, the collapse() method is applied to position the range's end point at the element's end. Finally, the range is selected, making it the new visible selection.

Usage:

To employ the setEndOfContenteditable() function, simply obtain the target element and apply it:

elem = document.getElementById('txt1'); // Element to move the caret to the end of
setEndOfContenteditable(elem);

This technique efficiently moves the caret to the end of a contenteditable element, regardless of browser version or element content length.

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