DocumentOrShadowRoot.caretPositionFromPoint()
Experimental
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
A 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. |