Month: July 2025

What is a TypedArray? A JavaScript TypedArray is an array-like object used to store binary data. Unlike the array, the size of the TypedArray can’t be dynamic and can’t hold the values of the different data types, improving the performance of the TypedArray. A TypedArray is used in audio processing, graphics rendering, networking, etc. Why […]

In JavaScript, iterables are objects that can be iterated through using the for…of loop. They can also be iterated over using other methods like forEach(), map(), etc. Basically, you can traverse through each element of the iterable in JavaScript. Here are some examples of the common iterables. Iterate using the for…of loop In this section, […]

A WeakMap object in JavaScript is a collection of key-value pairs where the keys are weakly referenced. The WeakMap keys must be objects or non-registered symbols, and values are of any arbitrary JavaScript type. The WeakMap is similar to the JavaScript Map. The main difference between the WeakMap and Map data structure is that the WeakMap data […]

A Map object in JavaScript is a collection of key-value pairs where the keys can be of any type, including objects or functions. The order of the map elements is the same as the insertion order of the key-value pairs. To create a new Map object, you can use the new Map() constructor. You can then add […]

The JavaScript WeakSet object is a collection of objects. The WeakSet is very similar to the Set. The main difference between the WeakSet and Set is that the WeakSet contains only objects, and the Set can also contain the values like numbers, Boolean, string, etc. WeakSet objects are weak, meaning that references to objects in […]

A JavaScript Set object is a collection of unique values. Each value can only occur once in a Set. A Set can hold any value of any data type. The sets are introduced to JavaScript in ECMAScript 6 (ES6). JavaScript Sets are similar to Arrays, but there are some key differences: JavaScript Sets are often used to store unique […]

JavaScript Symbol In JavaScript, Symbol is a primitive data type and it was introduced in ECMAScript 6 (ES6). It can be created using the ‘Symbol’ constructor. Symbols are immutable and unique, unlike to other primitive data types like strings or numbers. They are especially helpful in situations where a unique identifier is required since they offer a […]

A regular expression (RegExp) in JavaScript is an object that describes a pattern of characters. It can contain the alphabetical, numeric, and special characters. Also, the regular expression pattern can have single or multiple characters. The JavaScript RegExp class represents regular expressions, and both String and RegExp define methods that use regular expressions to perform powerful pattern-matching and search-and-replace functions on […]

The JavaScript math object provides properties and methods for mathematical constants and functions. Unlike other global objects, Math is not a constructor. All the properties and methods of Math are static and can be called by using Math as an object without creating it. Thus, you refer to the constant pi as Math.PI and you call the sine function as Math.sin(x), where […]

The JavaScript Proxy Handlers are used to define custom behavior for fundamental operations performed on objects. By defining handlers, you can override the default behavior of fundamental operations. Following are the common proxy handler methods: apply(), construct(), get(), has(), etc. JavaScript Handlers Following are the methods of JavaScript Handler − Sr.No. Name & Description 1 apply()Allows you […]