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    <p><strong>Revised answer, 5 September 2010</strong></p> <p>To account for trailing line breaks is tricky in IE, and I haven't seen any solution that does this. It is possible, however. The following is a new version of what I previously posted here.</p> <p>Note that the textarea must have focus for this function to work properly in IE. If in doubt, call the textarea's <code>focus()</code> method first.</p> <pre><code>function getInputSelection(el) { var start = 0, end = 0, normalizedValue, range, textInputRange, len, endRange; if (typeof el.selectionStart == "number" &amp;&amp; typeof el.selectionEnd == "number") { start = el.selectionStart; end = el.selectionEnd; } else { range = document.selection.createRange(); if (range &amp;&amp; range.parentElement() == el) { len = el.value.length; normalizedValue = el.value.replace(/\r\n/g, "\n"); // Create a working TextRange that lives only in the input textInputRange = el.createTextRange(); textInputRange.moveToBookmark(range.getBookmark()); // Check if the start and end of the selection are at the very end // of the input, since moveStart/moveEnd doesn't return what we want // in those cases endRange = el.createTextRange(); endRange.collapse(false); if (textInputRange.compareEndPoints("StartToEnd", endRange) &gt; -1) { start = end = len; } else { start = -textInputRange.moveStart("character", -len); start += normalizedValue.slice(0, start).split("\n").length - 1; if (textInputRange.compareEndPoints("EndToEnd", endRange) &gt; -1) { end = len; } else { end = -textInputRange.moveEnd("character", -len); end += normalizedValue.slice(0, end).split("\n").length - 1; } } } } return { start: start, end: end }; } </code></pre>
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    1. POHow to get the start and end points of selection in text area?
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    1. COthank you very much Tim Down, i already tried this thread. but the problem is when the last character of the selection is a new line character JavaScript ignore it in IE. otherwise those functions working fine
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    2. COAnswer now completely rewritten.
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    3. COAh: it breaks if there is a non-caret selection. Fixing...
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