Created
September 10, 2016 22:10
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| /** | |
| * Refactored | |
| * http://stackoverflow.com/questions/17678843/cant-restore-selection-after-html-modify-even-if-its-the-same-html | |
| */ | |
| function saveSelection(el) { | |
| var win = el.ownerDocument.defaultView; | |
| var range = win.getSelection().getRangeAt(0); | |
| var prefixRange = range.cloneRange(); | |
| prefixRange.selectNodeContents(el); | |
| prefixRange.setEnd(range.startContainer, range.startOffset); | |
| var start = prefixRange.toString().length; | |
| return { | |
| start: start, | |
| end: start + range.toString().length | |
| }; | |
| } | |
| function restoreSelection(el, saved) { | |
| var doc = el.ownerDocument; | |
| var win = doc.defaultView; | |
| var range = doc.createRange(); | |
| range.setStart(el, 0); | |
| range.collapse(true); | |
| var iter = doc.createNodeIterator(el, NodeFilter.SHOW_TEXT); | |
| var node; | |
| var i = 0, j = 0; | |
| var started = false; | |
| while (node = iter.nextNode()) { | |
| j = i + node.length; | |
| if (!started && saved.start >= i && saved.start <= j) { | |
| range.setStart(node, saved.start - i); | |
| started = true; | |
| } | |
| if (started && saved.end >= i && saved.end <= j) { | |
| range.setEnd(node, saved.end - i); | |
| break; | |
| } | |
| i = j; | |
| } | |
| var sel = win.getSelection(); | |
| sel.removeAllRanges(); | |
| sel.addRange(range); | |
| } |
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