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copied!<p>You could save and restore the character position using functions like these:</p> <p><a href="https://stackoverflow.com/a/13950376/96100">https://stackoverflow.com/a/13950376/96100</a></p> <p>I've adapted these function slightly to work for an element inside an iframe.</p> <p>Demo: <a href="http://jsfiddle.net/timdown/gEhjZ/4/" rel="nofollow noreferrer">http://jsfiddle.net/timdown/gEhjZ/4/</a></p> <p>Code:</p> <pre><code>var saveSelection, restoreSelection; if (window.getSelection && document.createRange) { saveSelection = function(containerEl) { var doc = containerEl.ownerDocument, win = doc.defaultView; var range = win.getSelection().getRangeAt(0); var preSelectionRange = range.cloneRange(); preSelectionRange.selectNodeContents(containerEl); preSelectionRange.setEnd(range.startContainer, range.startOffset); var start = preSelectionRange.toString().length; return { start: start, end: start + range.toString().length }; }; restoreSelection = function(containerEl, savedSel) { var doc = containerEl.ownerDocument, win = doc.defaultView; var charIndex = 0, range = doc.createRange(); range.setStart(containerEl, 0); range.collapse(true); var nodeStack = [containerEl], node, foundStart = false, stop = false; while (!stop && (node = nodeStack.pop())) { if (node.nodeType == 3) { var nextCharIndex = charIndex + node.length; if (!foundStart && savedSel.start >= charIndex && savedSel.start <= nextCharIndex) { range.setStart(node, savedSel.start - charIndex); foundStart = true; } if (foundStart && savedSel.end >= charIndex && savedSel.end <= nextCharIndex) { range.setEnd(node, savedSel.end - charIndex); stop = true; } charIndex = nextCharIndex; } else { var i = node.childNodes.length; while (i--) { nodeStack.push(node.childNodes[i]); } } } var sel = win.getSelection(); sel.removeAllRanges(); sel.addRange(range); }; } else if (document.selection) { saveSelection = function(containerEl) { var doc = containerEl.ownerDocument, win = doc.defaultView || doc.parentWindow; var selectedTextRange = doc.selection.createRange(); var preSelectionTextRange = doc.body.createTextRange(); preSelectionTextRange.moveToElementText(containerEl); preSelectionTextRange.setEndPoint("EndToStart", selectedTextRange); var start = preSelectionTextRange.text.length; return { start: start, end: start + selectedTextRange.text.length }; }; restoreSelection = function(containerEl, savedSel) { var doc = containerEl.ownerDocument, win = doc.defaultView || doc.parentWindow; var textRange = doc.body.createTextRange(); textRange.moveToElementText(containerEl); textRange.collapse(true); textRange.moveEnd("character", savedSel.end); textRange.moveStart("character", savedSel.start); textRange.select(); }; } </code></pre>

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