JSON.parse("{"__proto__":{"a":1}}")
{__proto__:{a:1}}
first sentence! = second sentence
JSON.parse("{"__proto__":{"a":1}}").a == undefined
{__proto__:{a:1}}.a == 1
this is why, what did JSON.parse do, thank you!
JSON.parse("{"__proto__":{"a":1}}")
{__proto__:{a:1}}
first sentence! = second sentence
JSON.parse("{"__proto__":{"a":1}}").a == undefined
{__proto__:{a:1}}.a == 1
this is why, what did JSON.parse do, thank you!
what the JSON.parse does at the bottom can be found in the standard
https://www.ecma-internationa.
. The other 1703 edge do not know what strange caching mechanism there is. If you can't print it for a while, you can print out
log JSON.parse ('{"_ proto__": {"a": 1}}') and {_ proto__: {aproto__ 1}} respectively. As a result, it seems that JSON.parse ignores the'_ _ proto__' attribute;
then try'_ proto__''_ _ proto_' to successfully log out, so I don't know why
refer to the standard upstairs and infer from 24.3.1.1
var b = {}
Object.defineProperty(b, '__proto__', {
get: function(){return {a:1}}
})this is what you want
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