[KongchangAI]
Unverified50% confidenceFactExact time

postMessage is a cross-document communication API introduced in HTML5 that allows messages to be passed between windows of different origins, and its security depends on the receiver validating event.origin and the message content.

1
Sources
50%
Confidence
Long-term
Relevance
11/1/2026
First Seen

Sources

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Stable URI
https://kongchang.com/claim/1121905
API
curl https://kongchang.com/api/v1/knowledge/claims/1121905
MCP
get_claim(id=1121905)