The multiplication operator behaves similarly to the division operator, apart from the obvious fact that it performs multiplication:

5 * 25; // => 125

It is necessary to watch out for effects of coercion and situations where either operand is NaN or Infinity. Rather intuitively, multiplying any non-zero finite value by Infinity will always result in Infinity (with the appropriate sign):

100 * Infinity; // => Infinity
-100 * Infinity; // => -Infinity

However, multiplying zero by Infinity will always result in NaN:

0 * Infinity; // => NaN
-Infinity * -0; // => NaN

Outside of these cases, most usages of the multiplication operator are fairly intuitive.