IE的removeNode等价物是什么

if ( window.Node )
Node.prototype.removeNode = function( removeChildren )
{
    var self = this;
    if ( Boolean( removeChildren ) )
    {
        return this.parentNode.removeChild( self );
    }
    else
    {
        var range = document.createRange();
        range.selectNodeContents( self );
        return this.parentNode.replaceChild( range.extractContents(), self );       
    }
}

.removeNode()

removeNode

$(elToRemove).replaceWith($(elToRemove).children());