DocumentOrShadowRoot.caretPositionFromPoint()

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The caretPositionFromPoint() property of the DocumentOrShadowRoot interface returns a CaretPosition object, containing the DOM node, along with the caret and caret's character offset within that node.

Syntax

var caretPosition = document.caretPositionFromPoint(float x, float y);

Parameters

x
The horizontal coordinate of a point.
y
The vertical coordinate of a point.

Returns

CaretPosition object.

Example

This example inserts line breaks wherever you click. The code for it is below the demo.  

Demo

HTML Content

<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat,
sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum.
Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p>

JavaScript Content

function insertBreakAtPoint(e) {
  var range;
  var textNode;
  var offset;

  if (document.caretPositionFromPoint) {
    range = document.caretPositionFromPoint(e.clientX, e.clientY);
    textNode = range.offsetNode;
    offset = range.offset;
  } else if (document.caretRangeFromPoint) {
    range = document.caretRangeFromPoint(e.clientX, e.clientY);
    textNode = range.startContainer;
    offset = range.startOffset;
  }

  // only split TEXT_NODEs
  if (textNode.nodeType == 3) {
    var replacement = textNode.splitText(offset);
    var br = document.createElement('br');
    textNode.parentNode.insertBefore(br, replacement);
  }
}

window.onload = function (){
  var paragraphs = document.getElementsByTagName("p");
  for (i=0 ; i < paragraphs.length; i++) {
    paragraphs[i].addEventListener("click", insertBreakAtPoint, false);
  }
};

Specifications

Specification Status Comment
CSS Object Model (CSSOM) View Module
The definition of 'caretPositionFromPoint()' in that specification.
Working Draft Initial definition.

Browser Compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
Experimental
Chrome No support NoEdge Full support YesFirefox Full support YesIE Full support YesOpera No support NoSafari Full support YesWebView Android No support NoChrome Android No support NoEdge Mobile Full support YesFirefox Android Full support YesOpera Android No support NoSafari iOS Full support YesSamsung Internet Android No support No

Legend

Full support  
Full support
No support  
No support
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

Document Tags and Contributors

Contributors to this page: myakura, fscholz, chrisdavidmills, david_ross, jpmedley
Last updated by: myakura,