JavaScript 中获取对象属性名集合的几种方式
直接看例子:1234567891011121314151617181920const SymbolA = Symbol('A')const SymbolB = Symbol('B')function Person(name) { this.name = name this[SymbolA] = 'SymbolA'}Person.prototype = { constructor: Person, job: 'student', [SymbolB]: &ap ...