JS: Get and set the position of a carat/cursor for an element.
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function _getCarat(el) { | |
if (el.selectionStart) { | |
return el.selectionStart; | |
} else if (document.selection) { | |
el.focus(); | |
var r = document.selection.createRange(); | |
if (r == null) { | |
return 0; | |
} | |
var re = el.createTextRange(), | |
rc = re.duplicate(); | |
re.moveToBookmark(r.getBookmark()); | |
rc.setEndPoint('EndToStart', re); | |
return rc.text.length; | |
} | |
return 0; | |
} |
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function _setCarat(el, start, end) { | |
if (typeof start == 'string' && start === 'end') { | |
start = el.value.length; | |
} | |
end = end || start; | |
el.setSelectionRange(start, end); | |
} |
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