问题
I am trying to fix an application in IE11 and I stuck in this bug: In the older version of IE ther was a simple selection object but it is deprecated in IE11. The MSDN page offer to use getSelection instead of that, but it is not the same. I need to create a TextRange based on the selection and in the old API there was a simple solution:
// there is a TextRange object what I need
var textRange = document.selection.createRange();
The new HTMLSelection object has no createRange() method and I didn't find any proper solution, what is not modify the DOM.
I try this: http://jsfiddle.net/p4Lu4/1/ (Usage: Select some text and hit any key. )
The problem with it: If you select throw one of the red boxes, it will remove the box.
Can anyone know a better solution?
Solution:
I think, I found a solution. Not the best and nicest but it is working for me: I can create the exact same TextRange from Selection.
http://jsfiddle.net/p4Lu4/4/
Update 2:
I create a modul for this: https://gist.github.com/festo/50fe800c7369db140a62
回答1:
My Rangy library has code to convert a DOM-compatible range to an IE TextRange as part of providing DOM range and selection support in IE <= 8. The latest build exposes this conversion explicitly on the selection object:
var textRange = rangy.getSelection().getNativeTextRange();
Note that the getNativeTextRange() method of a Rangy selection only exists in IE.
Another alternative is to use Rangy's TextRange module, which among other things adds an IE-like findText() method to Rangy's range object, along with the class applier module to do the highlighting. This will work in all major browsers.
Demo: http://jsfiddle.net/sycqeev2/
I'm not sure what's supposed to happen in your demo when you highlight text and press a key, so I haven't attempted to do anything with that.
来源：https://stackoverflow.com/questions/24958043/create-textselection-from-selection-in-ie11