JS: functions arguments default values

Question

In some languages you can set default values for function\'s arguments:

function Foo(arg1 = 50, arg2 = \'default\') {
    //...
}

How do yo

Answer 1

As of ES2015 (ES6), default parameters can be set like so:

function multiply (a, b = 2) {
  return a * b;
}
multiply(5); // 10