在js中添加以下代码

<script type="text/javascript">
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;
    };
}
</script>



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