The TLDR answer is that encryption is two way and hashing is only one way. Both are methods to securely transfer data, but there is some difference. ...

Event delegation makes use of two features of JavaScript events: event bubbling and the target element. When an event is triggered on an element, for example a ...

var is function scoped and if you try to use a variable declared with var before the actual declaration, you’ll just get undefined. const and let are blocked ...

We know becaue of js data-types rules, Strings act like strings and numbers like numbers. But what happens when you need two different data types to interact ...

When code is run in JavaScript, the environment in which it is executed is very important, and is evaluated as 1 of the following: Global code – The default ...

One of the key differentiating attributes between primitive data types and compound data types is that the former are immutable. This means that you cannot ...

A closure is the combination of a function bundled together (enclosed) with references to its surrounding state (the lexical environment). In other words, a ...

First, NaN is not a keyword (unlike true, false, null, etc..), it is a property of the global object. The value of NaN is the same as the value of Number.NaN: ...

When you try to access a property on the new object, it checks the object’s own properties first. If it doesn’t find it there, it checks the ], and so on up ...

An object can store data in one of two ways: as a property or as a variable. The method that you choose will have substantial ramifications on data visibility. ...

this refers to the object currently within the scope of the Person function. It sets it’s own property name as the value of the parameter passed into the ...

Instances inherit from classes (like a blueprint — a description of the class), and create sub-class relationships: hierarchical class taxonomies. Instances ...

Instances inherit from classes (like a blueprint — a description of the class), and create sub-class relationships: hierarchical class taxonomies. Instances ...

As a side note - Redux need reducers to be “pure functions Basic example of mutations let state = { wardens: 900, animals: 800 }; This above ...

The Document Object Model, or the “DOM”, is an interface to web pages. It is essentially an API to the page, allowing programs to read and manipulate the ...

DOCTYPE is an abbreviation for DOCument TYPE. A DOCTYPE is always associated to a DTD - for Document Type Definition. A DTD defines how documents of a certain ...

One of the feature git, has enabled us to record all changes by the commit. And saved it as our history. So when something unexpected happens, you can rollback ...

Code executed by setTimeout() is called from an execution context separate from the function from which setTimeout was called. The usual rules for setting ...

JavaScript has a single call stack in which it keeps track of what function we’re currently executing and what function is to be executed after that. But ...

The event loop's job is to look at the stack and look at the task queue. If the stack is empty it takes the first thing on the queue and pushes it on to the ...