Expired50% confidenceFactTime unknown
The toString() of a native browser API returns 'function xxx() { [native code] }', and the anti-scraping system detects whether a function is a native implementation by calling Function.prototype.toString.call(targetFn).
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
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