执行了下 console.log(window)

看了下R开头的部分
ProgressEvent: function ProgressEvent() { [native code] }
RGBColor: function RGBColor() { [native code] }
RTCIceCandidate: function RTCIceCandidate() { [native code] }
RTCSessionDescription: function RTCSessionDescription() { [native code] }
Range: function Range() { [native code] }
RangeError: function RangeError() { [native code] }
Rect: function Rect() { [native code] }
ReferenceError: function ReferenceError() { [native code] }
RegExp: function RegExp() { [native code] }
SQLException: function SQLException() { [native code] }
SVGAElement: function SVGAElement() { [native code] }

貌似没有runtime
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FROM 220.231.27.*