postMessage solve the problem of cross-domain iframe

Turn: https://juejin.im/post/5b8359f351882542ba1dcc31

https://juejin.im/post/590c3983ac502e006531df11

https://www.cnblogs.com/dolphinX/p/3464056.html

 

 

Invasion deleted.

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Origin www.cnblogs.com/wu-guo-xing/p/11208751.html