hi all!
check this one:
<html>
<head>
<title>Range test</title>
</head>
<body>
<div id="myText">FooBarBaz</div>
<script type="text/javascript">
myText = document.getElementById(''myText'').firstChild;
var range1 = document.createRange();
range1.setStart(myText, 3);
range1.setEnd(myText, 6);
var range2 = document.createRange();
range2.setStart(myText, 6);
range2.setEnd(myText, 9);
// as you can see in Firebug console we selected ''bar'' and
''baz''
console.log(''range1: '' + range1.toString() + ''
range2:'' +
range2.toString());
// let''s surround ''bar'' with a bold tag....
var newNode1 = document.createElement("b");
range1.surroundContents(newNode1);
// after surrounding range1, range2 doesn''t anymore contain
''baz'' !!!
console.log(''range1: '' + range1.toString() + ''
range2:'' +
range2.toString());
</script>
</body>
</html>
On section 2.12 of the specification
http://www.w3.org/TR/DOM-Level-2-Traversal-Range/ranges.html#Level-2-Range-Mutation
W3C states:
"There are two general principles which apply to Ranges under document
mutation: The first is that all Ranges in a document will remain valid
after any mutation operation and the second is that, as much as
possible, all Ranges will select the same portion of the document after
any mutation operation."
... "as much as possible" ??? A little bit vague...
I''ve found this short thread of some interest while trying to
understand
what they mean:
http://marc2.theaimsgroup.com/?l=xerces-j-dev&m=97257406416447&w=2
Anyway, if firefox implements the specification correctly, the behaviour
stated in W3C specification seems to be not very usefull!
Michael Bolin on section 8.3.2 of his thesis at MIT seems to think the
same, and states to have solved this problem as part of his software
project:
http://groups.csail.mit.edu/uid/projects/chickenfoot/mbolin-thesis.pdf
(look at page 86)
I can''t see anything simple to solve this... do you?
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