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Assignment Operators

Easy

In plain terms

= assigns a value. Compound operators like +=, -=, *=, /= combine assignment with an operation. They modify the variable in place and return the assigned value.

What you need to know

  • •=, +=, -=, *=, /=, %=, **=
  • •&=, |=, ^=, <<=, >>=, >>>=
  • •Returns assigned value

Try it yourself

Copy the code below and run it in your browser console or a code editor:

let x = 10;

x += 5;   // x = 15
x -= 3;   // x = 12
x *= 2;   // x = 24
x /= 4;   // x = 6

let str = 'Hello';
str += ' World';  // "Hello World"

// Chaining (rarely used)
let a = b = c = 0;

Learn more

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