What does console.log('5' + 3, '5' - 3) output?

Console output

Why

The + operator is the only arithmetic operator that also means concatenation: if either operand is a string, JS coerces the other to a string, so "5" + 3 becomes "53". The - operator has no string meaning, so it coerces both operands to numbers, giving "5" - 3 = 2.