curring in javascript code example

Example 1: currying in javascript

//No currying
function volume(w, h, l) {
  return w * h * l;
}

volume(4, 6, 3); // 72

//Currying
function volume(w) {
  return function(h) {
    return function(l) {
      return w * h* l;
    }
  }
}

volume(4)(6)(3); // 72

Example 2: what is currying

a technique that applies a function 
to its arguments one at a time, with 
each application returning a new function 
that accepts the next argument.