Null often pops up in legal and scientific contexts; it was originally used in Scottish law and still carries the meaning "having no legal or binding force," especially in the phrase "null and void."

Oct 28, 2025 · JavaScript is unique to have two nullish values: null and undefined. Semantically, their difference is very minor: undefined represents the absence of a value, while null represents the …

Mar 31, 2024 · Although undefined and null have some functional overlap, they have different purposes. In the strictest sense, null represents a value intentionally defined as "blank," and undefined …

NULL definition: without value, effect, consequence, or significance. See examples of null used in a sentence.

NULL definition: 1. having no legal force: 2. with no value or effect: 3. (of a set or matrix) containing nothing…. Learn more.

Jul 23, 2025 · undefined indicates a variable hasn’t been initialized, while null is intentionally assigned to indicate no value. Understanding the distinction helps write cleaner, more predictable code in …

Jun 12, 2018 · null is a fundamental concept in many programming languages. It is ubiquitous in all kinds of source code written in these languages. So it is essential to fully grasp the idea of null . We …

Jun 11, 2023 · When it comes to defining “nothing” in Javascript, we have null, undefined, and empty. Just why do we need so many ways to define “nothing” in Javascript and what is the difference?

Feb 20, 2023 · In JavaScript, null is a special value that represents the absence of any object value. It is often used to indicate that a variable or property has no value or that a function has no return value.

Jun 12, 2018 · If a reference points to null then it always means that there is no value associated with it. In most cases, null has a more specific meaning that depends on the context.