Lodash 源码分析

# minBy

# Description

minBy 的作用是取出一组数据中的最小值，需要传入迭代器 iteratee。

# Params

(array, iteratee)

# Return

{*}

# Depend

import isSymbol from './isSymbol.js'

isSymbol 源码分析

# Code

function minBy(array, iteratee) {
  let result
  if (array == null) {
    return result
  }
  let computed
  for (const value of array) {
    const current = iteratee(value)

    if (current != null && (computed === undefined
      ? (current === current && !isSymbol(current))
      : (current < computed)
    )) {
      computed = current
      result = value
    }
  }
  return result
}

# Analyze

和 maxBy 基本类似，除了 if 判断中 取的是 current < computed

# Example

console.log(minBy([1,2,3,4,2,0,5,63], (v) => v)) // 0

← multiply →