jQuery ready() can be implemented in native Javascript by listening to the DOMContentLoaded event. This event is fired when DOM is ready for manipulation.

The destructuring operator helps to assign values to variables from an array or object in a shorter syntax. It can shorten the amount of code to write for simple assignment statements.

The Spread operator denoted by three dots provides a shorter syntax to merge objects Only enumerable properties of the object can be copied.

Array.reduce() and Array.reduceRight() are methods that can be used to process each element in array through a defined way, and get a single output combining all.

Cleave.js is a Javascript library that helps in formatting input text while the user is typing. Date, time, credit cards, phone numbers, currencies etc are supported.

Type of a variable can be checked with 2 Javascript operators - typeof checks for a primitive data type, while instanceof operator checks whether it is a special kind of an object.

While dealing with mathematical calculations we need to make sure that the variable in question is actually a number. Any variable can be converted to a number using the global Number() method.

There are situations where an application needs to wait for the completion of multiple Promises and needs to know when they have all finished. In such cases Promise.all() or Promise.allSettled() methods can be used.

Immutable.js is a library for dealing with immutable data structures in Javascript. With this we can create immutable arrays and objects, and perform operations on them.

Data immutability becomes important when there are several developers working on a huge web application. This video shows how you can create immutable objects in Javascript.

ES6 has introduced the includes() method which a better way of detecting substring in a given string.

In rare cases we may need to execute some Javascript code depending upon a specific media query. This can be done with the help of window.matchMedia object.

Reading a URL and getting information about its various components - hostname, path, parameters etc is one of the common things required in Javascript. This tutorial tells how we can read any url, and get its component parts.

In some case we may need to change the value of the CSS variable dynamically, or get the value of the variable in Javascript. This can be done using the native browser APIs.

Quite often it is required to know whether elements of an array satisfy a given condition. Instead of using loops we can use native Javascript methods every() and some() to do this.

The setTimeout() method can have multiple parameters depending on the need. Custom parameters can be passed after the callback function and timeout parameters. These extra parameters are passed to the callback function - as its arguments.

The Web Share API helps a user in sharing text or URL in a website by using the sharing mechanism of the device. With this API we can add a "Share" button in a website.

Creating an object with a dynamic property name is possible in JS using computed property names. The dynamic keys are specified between [ ] square brackets.

Javascript Rest parameter syntax can be used in function declarations to compress passed arguments to an array. By using the Rest parameter syntax indefinite number of arguments can be passed to a function.

Javascript Spread operator helps to expand an iterable object, such as an array or a string. It is more like looping over the object and getting individual elements, but in a much shorter syntax.