How to assign a keys of an array as a function's parameters?

Question

I have a JavaScript module that exported with arrow function with 3 parameters, the following example:

// getMonth.js module

export default (date, type, ...rest)  => {
  // Represent this return exmaple
  return date + ' ' + type + ' ' + rest
}

In the main file, I have an array that I want to Assign the keys of the array as function's parameters

import getMonth from '../modules/month.js'
  
let splitedParams = ['2016/07/14', 'full']

getMonth({date, type, ...rest} = splitedParams)

But this implementation isn't right and I got some error, How can I do this?

Thanks

getMonth.apply(undefined, splitedParams)

Pointy
– Pointy

2016-12-14 15:46:59 +00:00
Commented Dec 14, 2016 at 15:46 — Pointy
– Pointy, Commented Dec 14, 2016 at 15:46

Sᴀᴍ Onᴇᴌᴀ · Accepted Answer · 2017-05-09 15:44:58Z

1

Use function.apply()

import getMonth from '../modules/month.js'

let splitedParams = ['2016/07/14', 'full']

getMonth.apply(null, splitedParams)

Or use the spread operator: ...

getMonth(...splitedParams)

See it demonstrated in this example below:

let splitedParams = ['2016/07/14', 'full']

//using Function.prototype.apply()
getMonth.apply(null, splitedParams);

//using the spread operator
getMonth(...splitedParams);

function getMonth(date, type) {
  console.log('getMonth() - date: ', date, 'type: ', type);
}

edited May 9, 2017 at 15:44

answered Dec 14, 2016 at 15:49

Sᴀᴍ Onᴇᴌᴀ

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Comments

Ori Drori · Accepted Answer · 2017-05-09 16:22:35Z

1

Use the spread syntax ... to assign the values from the array to the function parameters:

import getMonth from '../modules/month.js'

const splitedParams = ['2016/07/14', 'full']

getMonth(...splitedParams)

edited May 9, 2017 at 16:22

answered Dec 14, 2016 at 15:48

Ori Drori

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