From 336033802f899589e4370229617c1098f18618dc Mon Sep 17 00:00:00 2001 From: Gideon Cameron Date: Thu, 16 Jan 2025 03:48:35 -0800 Subject: [PATCH] Added some more JavaScript info. --- languages/javascript.js | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/languages/javascript.js b/languages/javascript.js index f5fb858..9cd3978 100644 --- a/languages/javascript.js +++ b/languages/javascript.js @@ -28,6 +28,8 @@ Object.preventExtensions(obj) // Prevents any extensions Object.seal(obj) // Prevents other code from deleting properties of an object. Object.setPrototypeOf(obj, prototype) // Sets the prototype (i.e., the internal [[Prototype]] property). Object.values(obj) // Returns an array containing the values that correspond to all of a given object's own enumerable string properties. +Object.hasOwn(obj, prop) // Checks if a object has a property of its own (not inherited). +Object.fromEntries(iterable) // Transforms a list of key values pairs into a onject. // Object instances and Object prototype object (Object.prototype.property or Object.prototype.method()) // Properties @@ -55,6 +57,8 @@ Array.prototype // Represents the prototype Array.from(arrayLike[, mapFn[, thisArg]]) // Creates a new Array instance from an array-like or iterable object. Array.isArray(obj) // Returns true if a variable is an array, if not false. Array.of(element0[, element1[, ...[, elementN]]]) // Creates a new Array instance with a variable number of arguments, regardless of number or type of the arguments. +Array.prototype.flatMap() // arr.flatMap(callback) / Combines map and flat into a single method call. +Array.prototype.group() //arr.group(callback) / Groups the elements of an array based on the callback's return value. // Instance: properties arr.length // Reflects the number of elements in an array.