the murmurous sea

split() go to see the post Array.prototype.join() 1. Method 2. Convert the elements of an array into a string 3. The string conversions of all array elements are joined into one string. 4. Creates and returns a new string by concatenating all of the elements in an array (or an array-like object▼). 더보기 The following example joins an array-like object (arguments), by calling Function.prototype.cal..

▼Prior knowledge 더보기 Prarmeters and Arguments : Function parameters are the names listed in the function definition. : Function arguments are the real values passed to (and received by) the function. Parameter Rules : JavaScript function definitions do not specify data types for parameters. : JavaScript functions do not perform type checking on the passed arguments. : JavaScript functions do not..

Using Set What is Set 더보기 1. collections of values. 2. store unique values of any type, whether primitive values or object references. 3. A value in the Set may only occur once; it is unique in the Set's collection. : Because each value in the Set has to be unique, the value equality will be checked. 4. earlier version of ECMAScript specification, +0 (which is strictly equal to -0) and -0 were d..

The String() function returns the same value as toString() of the individual objects. But String() : can use it on values that are undefined or null. toString() : will produce a TypeError exception. String will often call an object's toString() anyway, so its a safer way of doing that. String() 1. Constructor 2. Standard built-in objects 3. to create a new String object. 4. It performs type conv..

The difference is: The call() method takes arguments separately. The apply() method takes arguments as an array. www.w3schools.com/js/js_function_call.asp JavaScript Function call() JavaScript Function Call Method Reuse With the call() method, you can write a method that can be used on different objects. All Functions are Methods In JavaScript all functions are object methods. If a function is n..

**Before jump to the main content. JavaScript supports different kinds of loops: for loops through a block of code a number of times for...in loops through the properties of an object for...of loops through the values of an iterable object while loops through a block of code while a specified condition is true do...while loops through a block of code once, and then repeats the loop while a speci..

Object.keys() 1. method 2. iterated in the same order that a normal loop would. [Syntax] Object.keys(obj) [Return Value] An array : of strings : of a given object's own enumerable property names : that represent all the enumerable properties of the given object. : The ordering of the properties is the same as the obj. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objec..

Objects Arrays functions are : in JavaScript, an object is a standalone entity, with properties and type. : containers for named values called properties or methods. are : a special variable to store multiple values. : "list-like objects" : single objects that contain multiple values stored in a list. Array objects can be stored in variables can access each value inside the list individually - o..