Mar 6, 2025 · JavaScript provides three different value-comparison operations: === — strict equality (triple equals) == — loose equality (double equals) Object.is() Which operation you choose depends on what sort of comparison you are looking to perform. Briefly:

Jan 2, 2021 · The Abstract Equality Comparison Operator, a.k.a. == in JavaScript is the so-called type-coercing equality check. It coerces types if necessary and can lead to some pretty weird results. But we can make sense of all this, and you'll see that you can follow along.

Oct 29, 2014 · On a serious note, the answer to this lies in ECMAScript's spec for Abstract Equality Comparison Algorithm - better known as: == operator. Let's go step by step and take a look at how the JavaScript engine interprets [] == false.

Dec 10, 2023 · In this guide, we’ll break down everything you need to know about equality in JavaScript. We’ll look at comparison operators (like == and ===), explore different equality algorithms, and even dive into some built-in functions that help us compare values. By the end, you’ll know exactly when and how to use these tools in your own projects.

Aug 22, 2022 · The abstract and strict comparison operators can be used to check the equality of two operands in JavaScript. Both operators will check the equality of two values and return the boolean value (true or false) based on whether the values are equal or not.

Aug 19, 2022 · More specifically, == implements something called the Abstract Equality Comparison Algorithm, a 13-step process for determining if two things are equivalent. Let’s try to implement this algorithm in pure JavaScript.

Sep 26, 2020 · The Abstract Equality Comparison (==), JavaScript convert the operands before comparison. Any string with numerical value is converted to a number. An empty string converts to a 0. So lets follow...

Aug 11, 2020 · Abstract equality comparison (aka, loose equality comparison) compares two values for equality, after converting both the values into a common type. In this type of comparison, type coercion is performed by JavaScript.

7.2.13 Abstract Equality Comparison The comparison x == y, where x and y are values, produces true or false. Such a comparison is performed as follows:

Sep 8, 2024 · JavaScript offers a variety of methods and algorithms to compare values for equality, each serving specific purposes and addressing different nuances. Understanding these methods is essential for writing robust and bug-free code.