JavaScript Assignment Operators

Assignment operators put values into variables.

The plain equals sign is the main one.

There are shortcuts that change a value and save it in one step.

Simple assignment

= stores the right side into the left side.

Read it as put this into that box.

Add and assign

+= means add to the old value, then save it.

It is a shorter way to write score = score + 5.

Subtract, multiply, divide

You also get -=, *=, and /=.

Each one changes the box using math, then keeps the new answer.

Remainder and power shortcuts

%= keeps the leftover. **= raises to a power and saves.

Same idea for strings

+= can also glue text onto text.

Tip: Shortcuts save typing. If a line feels unclear, write the long form first, then shorten it.