JavaScript高阶函数的用法介绍

var process = function (array, processor) {

  var l = []

  for (var i = 0; i < array.length; i++) {

    var a = array[i]

    var element = processor(a)

    l.push(element)

  }

  return l

}

var square = function (x) {

  return x * x

}

var array = [1, 2, 3]

var result = process(array, square)

console.log(result)