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Number.MIN_SAFE_INTEGER

The Number.MIN_SAFE_INTEGER constant represents the minimum safe integer in JavaScript (-(253 - 1)).
ECMAScript6 JavaScript Number Property

Number.parseFloat()

The Number.parseFloat() method parses a string argument and returns a floating point number. This method behaves identically to the global function parseFloat() and is part of ECMAScript 6 (its purpose is modularization of globals).
ECMAScript6 JavaScript Method Number

Number.parseInt()

The Number.parseInt() method parses a string argument and returns an integer of the specified radix or base.
ECMAScript6 JavaScript Method Number

Object.defineProperties()

The Object.defineProperties() method defines new or modifies existing properties directly on an object, returning the object.
ECMAScript5 JavaScript Method Object

Object.freeze()

The Object.freeze() method freezes an object: that is, prevents new properties from being added to it; prevents existing properties from being removed; and prevents existing properties, or their enumerability, configurability, or writability, from being changed. In essence the object is made effectively immutable. The method returns the object being frozen.
ECMAScript5 JavaScript Method Object

Object.getOwnPropertyDescriptor()

The Object.getOwnPropertyDescriptor() method returns a property descriptor for an own property (that is, one directly present on an object and not in the object's prototype chain) of a given object.
ECMAScript5 JavaScript Method Object

Object.getOwnPropertySymbols()

The Object.getOwnPropertySymbols() method returns an array of all symbol properties found directly upon a given object.
ECMAScript6 JavaScript Method Object

Object.getPrototypeOf()

The Object.getPrototypeOf() method returns the prototype (i.e. the value of the internal [[Prototype]] property) of the specified object.
ECMAScript5 JavaScript Method Object

Promise

The Promise object is used for asynchronous computations. A Promise represents a value which may be available now, or in the future, or never.
ECMAScript6 JavaScript Promise

Promise.all()

The Promise.all(iterable) method returns a promise that resolves when all of the promises in the iterable argument have resolved, or rejects with the reason of the first passed promise that rejects.
ECMAScript6 JavaScript Method Promise

Promise.race()

The Promise.race(iterable) method returns a promise that resolves or rejects as soon as one of the promises in the iterable resolves or rejects, with the value or reason from that promise.
ECMAScript6 JavaScript Method Promise

Promise.reject()

The Promise.reject(reason) method returns a Promise object that is rejected with the given reason.
ECMAScript6 JavaScript Method Promise

Promise.resolve()

The Promise.resolve(value) method returns a Promise object that is resolved with the given value. If the value is a thenable (i.e. has a "then" method), the returned promise will "follow" that thenable, adopting its eventual state; otherwise the returned promise will be fulfilled with the value.
ECMAScript6 JavaScript Method Promise

Proxy

The Proxy object is used to define custom behavior for fundamental operations (e.g. property lookup, assignment, enumeration, function invocation, etc).
ECMAScript6 JavaScript Proxy

Proxy handler

The proxy's handler object is a placeholder object which contains traps for proxies.
ECMAScript6 JavaScript Proxy

handler.apply()

The handler.apply() method is a trap for a function call.
ECMAScript6 JavaScript Method Proxy

handler.construct()

The handler.construct() method is a trap for the new operator.
ECMAScript6 JavaScript Method Proxy

handler.defineProperty()

The handler.defineProperty() method is a trap for Object.defineProperty().
ECMAScript6 JavaScript Method Proxy

handler.deleteProperty()

The handler.deleteProperty() method is a trap for the delete operator.
ECMAScript6 JavaScript Method Proxy

handler.get()

The handler.get() method is a trap for getting a property value.
ECMAScript6 JavaScript Method Proxy