JavaScript所有内部属性列表 [[Configurable]] 等

简介

据MDN文档所说内部属性是由 [[···]] 包裹的内容，于是我们去复制 ECMA-262 标准的所有文字部分，然后用正则统计 [[···]] 的出现并打印

效果

代码

经老大提醒，这里的正则并不能完整匹配字母

'use strict';
let re = /\[\[[A-z]+\]\]/g;
let f = ()=>{
  let m = new Map()
  for (const x of a.match(re)) {
    let t = m.get(x) || 0
    m.set(x,++t)
  }
  let arr = []
  for (const [k,v] of m) {
    arr.push({k,v})
  }
  arr.sort((a,b)=>{
    return b.v - a.v
  })
  // console.log(arr.map(x=>JSON.stringify(x)).join('\n'))
  console.log(arr.slice(0,25));
}
var a = `Reference number...(注意这里要自己去粘贴，方法就是下载pdf全选复制)`
f();

所以结果呢？？

{"k":"[[Value]]","v":276}

{"k":"[[Configurable]]","v":232}

{"k":"[[Writable]]","v":218}

{"k":"[[Enumerable]]","v":212}

{"k":"[[Prototype]]","v":119}

{"k":"[[Type]]","v":86}

{"k":"[[Status]]","v":77}

{"k":"[[Get]]","v":74}

{"k":"[[Set]]","v":73}

{"k":"[[Done]]","v":70}

{"k":"[[Key]]","v":65}

{"k":"[[GetOwnProperty]]","v":61}

{"k":"[[Call]]","v":60}

{"k":"[[Construct]]","v":57}

{"k":"[[ViewedArrayBuffer]]","v":54}

{"k":"[[GetPrototypeOf]]","v":44}

{"k":"[[DefineOwnProperty]]","v":42}

{"k":"[[TypedArrayName]]","v":42}

{"k":"[[ArrayLength]]","v":39}

{"k":"[[ArrayBufferData]]","v":38}

{"k":"[[Promise]]","v":37}

{"k":"[[OwnPropertyKeys]]","v":34}

{"k":"[[Delete]]","v":33}

{"k":"[[Realm]]","v":32}

{"k":"[[Target]]","v":31}

{"k":"[[Reject]]","v":31}

{"k":"[[DateValue]]","v":30}

{"k":"[[PendingAsyncDependencies]]","v":29}

{"k":"[[LocalName]]","v":28}

{"k":"[[Resolve]]","v":28}

{"k":"[[EvaluationError]]","v":27}

{"k":"[[DFSAncestorIndex]]","v":27}

{"k":"[[ReferencedName]]","v":26}

{"k":"[[Extensible]]","v":26}

{"k":"[[ByteOffset]]","v":26}

{"k":"[[AsyncEvaluation]]","v":26}

{"k":"[[ModuleRequest]]","v":26}

{"k":"[[SetPrototypeOf]]","v":25}

{"k":"[[ImportName]]","v":25}

{"k":"[[ProxyHandler]]","v":23}

{"k":"[[ProxyTarget]]","v":23}

{"k":"[[AsyncGeneratorState]]","v":23}

{"k":"[[ExportName]]","v":23}

{"k":"[[Capability]]","v":23}

{"k":"[[IsExtensible]]","v":22}

{"k":"[[Base]]","v":22}

{"k":"[[MapData]]","v":22}

{"k":"[[HasProperty]]","v":21}

{"k":"[[DFSIndex]]","v":21}

{"k":"[[PreventExtensions]]","v":20}

{"k":"[[Order]]","v":20}

{"k":"[[BindingName]]","v":19}

{"k":"[[SetData]]","v":19}

{"k":"[[ByteIndex]]","v":18}

{"k":"[[Iterator]]","v":18}

{"k":"[[AlreadyCalled]]","v":18}

{"k":"[[Description]]","v":17}

{"k":"[[Block]]","v":17}

{"k":"[[Kind]]","v":17}

{"k":"[[StringData]]","v":17}

{"k":"[[ECMAScriptCode]]","v":17}

{"k":"[[ContentType]]","v":17}

{"k":"[[ArrayBufferByteLength]]","v":17}

{"k":"[[Strict]]","v":16}

{"k":"[[Module]]","v":16}

{"k":"[[ErrorData]]","v":16}

{"k":"[[Index]]","v":16}

{"k":"[[RemainingElements]]","v":16}

{"k":"[[NoTear]]","v":15}

{"k":"[[ElementSize]]","v":15}

{"k":"[[Environment]]","v":15}

{"k":"[[WeakRefTarget]]","v":15}

{"k":"[[ByteLength]]","v":15}

{"k":"[[GeneratorBrand]]","v":15}

{"k":"[[CycleRoot]]","v":15}

{"k":"[[AsyncParentModules]]","v":15}

{"k":"[[PromiseState]]","v":15}

{"k":"[[OriginalFlags]]","v":15}

{"k":"[[ThisValue]]","v":14}

{"k":"[[NumberData]]","v":14}

{"k":"[[RegExpMatcher]]","v":14}

{"k":"[[BindingObject]]","v":14}

{"k":"[[ObjectRecord]]","v":14}

{"k":"[[Cells]]","v":14}

{"k":"[[GeneratorState]]","v":14}

{"k":"[[TopLevelCapability]]","v":14}

{"k":"[[Min]]","v":14}

{"k":"[[Max]]","v":14}

{"k":"[[HappensBefore]]","v":14}

{"k":"[[EventList]]","v":13}

{"k":"[[EventsRecords]]","v":13}

{"k":"[[OuterEnv]]","v":13}

{"k":"[[WeakMapData]]","v":13}

{"k":"[[ParameterMap]]","v":13}

{"k":"[[Indent]]","v":13}

{"k":"[[WeakSetData]]","v":12}

{"k":"[[InitialName]]","v":12}

{"k":"[[Values]]","v":12}

{"k":"[[CandidateExecution]]","v":11}

{"k":"[[IsHTMLDDA]]","v":11}

{"k":"[[BooleanData]]","v":11}

{"k":"[[SourceText]]","v":11}

{"k":"[[ThisBindingStatus]]","v":11}

{"k":"[[HostDefined]]","v":11}

{"k":"[[HasTLA]]","v":11}

{"k":"[[Handler]]","v":11}

{"k":"[[AgentSignifier]]","v":10}

{"k":"[[Payload]]","v":10}

{"k":"[[CodeUnitCount]]","v":10}

{"k":"[[NextMethod]]","v":10}

{"k":"[[DeclarativeRecord]]","v":10}

{"k":"[[GlobalEnv]]","v":10}

{"k":"[[AsyncGeneratorQueue]]","v":10}

{"k":"[[StartIndex]]","v":10}

{"k":"[[Intrinsics]]","v":9}

{"k":"[[Callback]]","v":9}

{"k":"[[LittleEndian]]","v":9}

{"k":"[[IsClassConstructor]]","v":9}

{"k":"[[DataView]]","v":9}

{"k":"[[SyncIteratorRecord]]","v":9}

{"k":"[[VarNames]]","v":8}

{"k":"[[Exports]]","v":8}

{"k":"[[CodePoint]]","v":8}

{"k":"[[AlreadyResolved]]","v":8}

{"k":"[[Job]]","v":8}

{"k":"[[ReadsFrom]]","v":8}

{"k":"[[BigIntData]]","v":7}

{"k":"[[IsUnpairedSurrogate]]","v":7}

{"k":"[[BoundTargetFunction]]","v":7}

{"k":"[[FunctionObject]]","v":7}

{"k":"[[ThisMode]]","v":7}

{"k":"[[Names]]","v":7}

{"k":"[[ConstructorKind]]","v":7}

{"k":"[[GeneratorContext]]","v":7}

{"k":"[[PromiseResult]]","v":7}

{"k":"[[OriginalSource]]","v":7}

{"k":"[[EndIndex]]","v":7}

{"k":"[[Stack]]","v":7}

{"k":"[[PromiseFulfillReactions]]","v":7}

{"k":"[[PromiseRejectReactions]]","v":7}

{"k":"[[HostSynchronizesWith]]","v":7}

{"k":"[[SynchronizesWith]]","v":7}

{"k":"[[Event]]","v":6}

{"k":"[[ChosenValue]]","v":6}

{"k":"[[ChosenValues]]","v":6}

{"k":"[[SymbolData]]","v":6}

{"k":"[[UnregisterToken]]","v":6}

{"k":"[[CleanupCallback]]","v":6}

{"k":"[[ClassFieldInitializerName]]","v":6}

{"k":"[[Namespace]]","v":6}

{"k":"[[Object]]","v":6}

{"k":"[[ObjectWasVisited]]","v":6}

{"k":"[[AsyncGeneratorContext]]","v":6}

{"k":"[[ModifyOp]]","v":6}

{"k":"[[Gap]]","v":6}

{"k":"[[PromiseIsHandled]]","v":6}

{"k":"[[ReadsBytesFrom]]","v":6}

{"k":"[[PrivateElements]]","v":5}

{"k":"[[IsWithEnvironment]]","v":5}

{"k":"[[NewTarget]]","v":5}

{"k":"[[HomeObject]]","v":5}

{"k":"[[GlobalThisValue]]","v":5}

{"k":"[[GlobalObject]]","v":5}

{"k":"[[TemplateMap]]","v":5}

{"k":"[[Array]]","v":5}

{"k":"[[Closure]]","v":5}

{"k":"[[RequestedModules]]","v":5}

{"k":"[[IndirectExportEntries]]","v":5}

{"k":"[[Completion]]","v":5}

{"k":"[[AgentOrder]]","v":5}

{"k":"[[PrivateMethods]]","v":4}

{"k":"[[Fields]]","v":4}

{"k":"[[OuterPrivateEnvironment]]","v":4}

{"k":"[[Site]]","v":4}

{"k":"[[CanBlock]]","v":4}

{"k":"[[Signifier]]","v":4}

{"k":"[[KeptAlive]]","v":4}

{"k":"[[AgentSynchronizesWith]]","v":4}

{"k":"[[HeldValue]]","v":4}

{"k":"[[FormalParameters]]","v":4}

{"k":"[[BoundArguments]]","v":4}

{"k":"[[ImportMeta]]","v":4}

{"k":"[[VisitedKeys]]","v":4}

{"k":"[[RemainingKeys]]","v":4}

{"k":"[[LocalExportEntries]]","v":4}

{"k":"[[StarExportEntries]]","v":4}

{"k":"[[Symbol]]","v":4}

{"k":"[[Greedy]]","v":4}

{"k":"[[CharSet]]","v":4}

{"k":"[[Invert]]","v":4}

{"k":"[[ArrayBufferDetachKey]]","v":4}

{"k":"[[Errors]]","v":4}

{"k":"[[RevocableProxy]]","v":4}

{"k":"[[Name]]","v":3}

{"k":"[[Initializer]]","v":3}

{"k":"[[BodyFunction]]","v":3}

{"k":"[[PrivateEnvironment]]","v":3}

{"k":"[[ScriptOrModule]]","v":3}

{"k":"[[BoundThis]]","v":3}

{"k":"[[Context]]","v":3}

{"k":"[[ImportEntries]]","v":3}

{"k":"[[ReplacerFunction]]","v":3}