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Setting the caret position to an empty node inside a contentEditable element

My task is to set a text caret to appear inside an empty span node within a contentEditable div.

The following gives me no problems on Firefox 3.6:

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
        <script type="text/javascript" src="js/jquery-1.4.3.min.js">
        </script>
        <style>
            #multiple {
                border: 1px solid #ccc;
                width: 800px;
                min-height: 20px;
                padding: 5px;
                outline: none;
            }
        </style>
        <script>
            $(document).ready(function(){

    var contentEditable = document.getElementById('multiple');
    var lastItem = contentEditable.getElementsByTagName('span').item(2);

                var selectElementText = function(el, win){
                    win = win || window;
                    var doc = win.document, sel, range;
                    if (win.getSelection && doc.createRange) {                    
                        range = doc.createRange();
                        range.selectNodeContents(el);
                        range.collapse(false);
                        sel = win.getSelection();
                        sel.removeAllRanges();
                        sel.addRange(range);
                    }
                    else 
                        if (doc.body.createTextRange) {
                            range = doc.body.createTextRange();
                            range.moveToElementText(el);
                            range.select();
                        }
                }

                contentEditable.focus();
                selectElementText(lastItem);
            });
        </script>
        <title>Range Selection Tasks (Make Me Want to Cry)</title>
    </head>
    <body>
        <div id="multiple" contentEditable="true">
            <span style="color:red">First</span><span style="color:green">Second</span><span style="color:blue"></span>
        </div>
    </body>
</html>

... but on Webkit and IE, the focus is set to the penultimate span. No idea why. It works if I put a space inside the last span, but then I get a one-character range selection.

Having said that, it's acceptable to have whitespace in the last node if the caret is at the very start.

Any help with this would be greatly appreciated. Thank you in advance.

17
задан Mike 31 October 2010 в 13:57
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