node ten Modules(初始)

给迷茫的你学习Node.js最好的方法

原文连接

每天10个 npm 模块

仓库地址

Array

is-sorted

A small module to check if an Array is sorted.

核心代码 index.js

1
2
3
4
5
6
7
8
9
10
11
12
13
function defaultComparator (a, b) {
  return a - b
}

module.exports = function checksort (array, comparator) {
  comparator = comparator || defaultComparator

  for (var i = 1, length = array.length; i < length; ++i) {
    if (comparator(array[i - 1], array[i]) > 0) return false
  }

  return true
}

test.js

1
2
3
4
5
6
7
8
9
10
var sorted = require('./index')

console.log(sorted([1, 2, 3]))
// => true

console.log(sorted([3, 1, 2]))
// => false

// supports custom comparators
console.log(sorted([3, 2, 1], function (a, b) { return b - a }))