HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>caretPositionFromPoint split</title>
  <style>
    body { font-family: system-ui, sans-serif; padding: 1.5rem; max-width: 36rem; }
    p { cursor: text; line-height: 1.6; }
    pre { font-size: 0.85rem; color: #555; }
  </style>
</head>
<body>
  <p id="para">Lorem ipsum dolor sit amet, consetetur sadipscing elitr. Click anywhere to insert a line break at that character.</p>
  <pre id="out">Click the paragraph</pre>
  <script>
    function insertBreakAtPoint(e) {
      var textNode, offset;
      if (document.caretPositionFromPoint) {
        var pos = document.caretPositionFromPoint(e.clientX, e.clientY);
        if (!pos) return;
        textNode = pos.offsetNode;
        offset = pos.offset;
      } else if (document.caretRangeFromPoint) {
        var range = document.caretRangeFromPoint(e.clientX, e.clientY);
        if (!range) return;
        textNode = range.startContainer;
        offset = range.startOffset;
      } else {
        document.getElementById("out").textContent = "No caret API supported";
        return;
      }
      if (textNode && textNode.nodeType === 3) {
        var replacement = textNode.splitText(offset);
        var br = document.createElement("br");
        textNode.parentNode.insertBefore(br, replacement);
        document.getElementById("out").textContent = "Inserted br at offset " + offset;
      }
    }
    document.getElementById("para").addEventListener("click", insertBreakAtPoint);
  </script>
</body>
</html>

Lines: 0 | Characters: 0

Live Preview Auto-refresh on Run

Document.caretPositionFromPoint — split text MDN (Try It)