ExtJs在IE9上报错：对象不支持“createContextualFragment”属性或方法（解决方案）转

if ((typeof Range !== "undefined") && !Range.prototype.createContextualFragment) {            Range.prototype.createContextualFragment = function (html) {            var frag = document.createDocumentFragment(),            div = document.createElement("div");            frag.appendChild(div);            div.outerHTML = html;            return frag;        };    }