Run results for: Random Getters

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.97 Safari/537.36

Browser: Chrome 78

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Lodash	1653460.0 Ops/sec
Mine	2201252.0 Ops/sec
Mine2	1957875.0 Ops/sec
Mine3	1455807.0 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js'></script>

Script Preparation code:

var obj = {
  a: {
    b: {
      c: {
        foo: {
          bar() {
            return '42'
          }
        }
      }
    }
  }
}

function getProp1(list, obj) {
  const selector = list.split('.')
  if (arguments.length === 1) return _obj => getProp1(list, _obj)

  for (const prop of selector) {
    if (obj[prop]) {
      obj = obj[prop]
    }
  }

  return obj
}

function getProp2(list, obj) {
  const selector = list.split('.')
  const lengthof = selector.length
  if (arguments.length === 1) return _obj => getProp2(list, _obj)

  for (const prop of selector) {
    if (obj[prop]) {
      obj = obj[prop]
    }
  }
  
  
  for (let i = 0; i < lengthof; i++) {
    if (obj[selector[i]]) {
      obj = obj[prop]
    }
  }

  return obj
}

function getProp3(list, obj) {
  const selector = list.split('.')
  if (arguments.length === 1) return _obj => getProp3(list, _obj)

  for (const i in selector) {
    if (obj[selector[i]]) {
      obj = obj[selector[i]]
    }
  }

  return obj
}

function path(list, obj){
  if (arguments.length === 1) return _obj => path(list, _obj)

  if (obj === null || obj === undefined){
    return undefined
  }
  let willReturn = obj
  let counter = 0

  const pathArrValue = typeof list === 'string' ? list.split('.') : list

  while (counter < pathArrValue.length){
    if (willReturn === null || willReturn === undefined){
      return undefined
    }
    willReturn = willReturn[ pathArrValue[ counter ] ]
    counter++
  }

  return willReturn
}

Tests:

Lodash
_.get('a.b.c.foo.bar', obj)
Mine
getProp1('a.b.c.foo.bar')(obj)
Mine2
getProp2('a.b.c.foo.bar')(obj)
Mine3
getProp3('a.b.c.foo.bar')(obj)

Run results for: Random Getters

Lodash

Mine

Mine2

Mine3