Addition assignment (+=) - JavaScript | MDN
Jul 8, 2025 · The addition assignment (+=) operator performs addition (which is either numeric addition or string concatenation) on the two operands and assigns the result to the left operand.
JavaScript Operators - W3Schools
Assignment operators assign values to JavaScript variables. The Addition Assignment Operator (+=) adds a value to a variable. Assignment operators are fully described in the JS Assignment …
Addition Assignment (+=) Operator in Javascript - GeeksforGeeks
Jul 23, 2025 · JavaScript Addition assignment operator (+=) adds a value to a variable, The Addition Assignment (+ =) Sums up left and right operand values and then assigns the result …
Stop Writing Repetitive JavaScript: Master All 13 Assignment Operators ...
Sep 3, 2025 · Learn every JavaScript assignment operator with real examples. Save time coding with +=, -=, &&=, and 10 more shortcuts that eliminate redundant code. I used to write counter …
JavaScript Operators
Comparison operators in programming compare two values or expressions, returning a Boolean value (true or false) based on their relationship, like equality, inequality, or relative values. …
Addition assignment operator in JavaScript | Web developer jobs
Dec 30, 2022 · Sometimes, when you stumble upon the += sign in JavaScript, you immediately think about positive and negative numbers. However, this sign is probably not what you think. …
JavaScript Addition Assignment Operator - W3Schools
+= is an ECMAScript1 (JavaScript 1997) feature. It is supported in all browsers: Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, …
How to Addition Assignment or += Operator in JavaScript
Feb 2, 2024 · This article will let you know about the addition assignment operator in JavaScript. Let's have look how it works and read the other assignment operators.
Expressions and operators - JavaScript | MDN - MDN Web Docs
Jul 8, 2025 · As the examples above also illustrate, all complex expressions are joined by operators, such as = and +. In this section, we will introduce the following operators: These …
JavaScript Assignment Operators - GeeksforGeeks
Oct 11, 2025 · The Addition assignment operator adds the value to the right operand to a variable and assigns the result to the variable. Addition or concatenation is possible.