function?f()?{?console.log('I?am?outside!';}
(function?()?{
????if(false)?{
????????function?f()?{?console.log('I?am?inside!';}
????}
????f();
}());
//es5會(huì)輸出I?am?inside!,es6會(huì)輸出I?am?outside!
//那么用babel編譯,最后在輸出的時(shí)候是輸出什么?
//如果輸出的是I?am?outside!,意思就是說當(dāng)同一段代碼出現(xiàn)歧義的時(shí)候,會(huì)默認(rèn)采用es6嗎?
如果同一段代碼在es5和es6輸出不同結(jié)果,那么在運(yùn)行時(shí)按哪個(gè)標(biāo)準(zhǔn)?
一青
2018-01-15 16:16:40