[EmperioAf]

function getSetter(obj, prop) {
  return function (value) {
    obj[prop] = value; 
  };
}

var example = { text: 'Hello'};

var setExampleText = getSetter(example, 'text');
console.log(example ); // {text: "Hello"}
setExampleText('Hello World');
console.log(example ); //{text: "Hello World"}