求救 ie11 如何获取 input 中选择的文本

Question

IE其他版本的获取方式如下：
var isIE=!!document.all;
if(isIE){
var rng=window.getSelection.createRange();
str = rng.text;
} else {
var s = window.getSelection();
str = s.toString();
}

请问IE11下如何获取？

Answer 1

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/