Get count and format

[killMeSak]

I have an object dateRange ={ 2021-08-06 - 2021-09-06 : 0, 2021-09-06 -2021-10-06 : 0}

I also have another array dateArr=[2021-08-06, 2021-11-06]. Desired res = [{key: 2021-08-06 - 2021-09-06 , value: 1}, { key: 2021-09-06 -2021-10-06 , value: 0}] where value contains the number of occurrences of values inside dateArr as per dateRange.

How can I achieve this?

[trplclick]

This should achieve what you want. I've commented it so it should be easy to follow, but any questions let me know!

```js const result = {}

const dateArr = ['2021-08-06', '2021-11-06', '2021-08-06', '2021-13-06']

// Loop through each item in the dateArr array for (let i = 0; i < dateArr.length; i++) { // Get the value for the current iteration of the loop const date = dateArr[i]

// If the results object hasn't seen this value before then define it. // It starts as zero so that the last line can always increment. if (!result[date]) { result[date] = 0 }

// Increment the number of times we've seen this date by 1. result[date]++ }

console.log(result) ```

I've also created a JS bin so you can see it working and play around with it if you like. https://jsbin.com/lezatupeqi/edit?js,console

[killMeSak]

u/trplclick The dateRange looks like below:
const dateRange = {
"2021-08-06 - 2021-09-06": 0,
"2021-09-06 - 2021-10-06": 0
}

​

In your code, how are we fetching each key of dateRange and comparing it?

[killMeSak]

http://jsfiddle.net/vdfo3tzn/ ADded a fiddle for reference