我看到很多Let value be ?, Return ?规范中的某事。 example
谁知道?的意思。
最佳答案
Abstract operations referenced using the functional application style and the method application style that are prefixed by
?indicate that ReturnIfAbrupt should be applied to the resulting Completion Record.For example, ? operationName() is equivalent to ReturnIfAbrupt(operationName()).
Similarly, ? someValue.operationName() is equivalent to ReturnIfAbrupt(someValue.operationName()).
关于javascript - ECMAScript 规范 : meaning of question mark in the spec，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41733976/