CODEWITHSUNDEEP
javascript
Munish Kapoor
Munish Kapoor

Reputation: 3359

Javascript filter JSON by date

I am trying to implement the solution to find data from JSON by date here is the JSON data

[
  {
        draw_date: "2021-06-30T00:00:00.000",
        winning_numbers: "24 29 50 65 66 14",
        multiplier: "4"
    },
    {
        draw_date: "2021-06-26T00:00:00.000",
        winning_numbers: "08 31 39 43 60 17",
        multiplier: "3"
    }
];

I have implemented the solution

const result = [
  {
        draw_date: "2021-06-30T00:00:00.000",
        winning_numbers: "24 29 50 65 66 14",
        multiplier: "4"
    },
    {
        draw_date: "2021-06-26T00:00:00.000",
        winning_numbers: "08 31 39 43 60 17",
        multiplier: "3"
    }
];
const date = result.find(data => data.draw_date == '2021-06-30T00:00:00.000')
console.log(date);

But the solution is only finding the data by exact date string for example

2021-06-30T00:00:00.000

If I search like this

2021-06-30

Getting undefind

Any idea? Please help.

Upvotes: 0

Views: 78

Answers (4)

MW UMESH
MW UMESH

Reputation: 56

You are calling filtering on the basis of 2021-06-30T00:00:00.000, if it matches in the array you will get a response.

For the solution you can use the below code:

const result = [
  {
        draw_date: "2021-06-30T00:00:00.000",
        winning_numbers: "24 29 50 65 66 14",
        multiplier: "4"
    },
    {
        draw_date: "2021-06-26T00:00:00.000",
        winning_numbers: "08 31 39 43 60 17",
        multiplier: "3"
    }
];
const date = result.find(data => data.draw_date == '2021-06-30T00:00:00.000' || data.draw_date.split("T")[0] == '2021-06-30');

Or

cost date = result.find(data => data.draw_date.split("T")[0] == '2021-06-30');

Output :

{draw_date: "2021-06-30T00:00:00.000", winning_numbers: "24 29 50 65 66 14", multiplier: "4"}

Alternatives :

  1. You can use includes which can check if the string matches or not
  2. We have loadash(underscore.js) as well to fetch and organize JSON

Upvotes: 1

andrew
andrew

Reputation: 1816

There is no string == "2021-06-30" in your data. The first string called draw_date is 2021-06-30T00:00:00.000, which is clearly not the same string.

You will need to use an expression to match a string that starts with the searched date string.

It appears the date format is well-defined, and if you can rely on that, then perhaps startsWith might be helpful: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith

Upvotes: 1

Kirubiel Shimeles
Kirubiel Shimeles

Reputation: 31

There's a difference between 2021-06-30T00:00:00.000 and 2021-06-30 when using the equality operator (==). Instead of searching, you're checking if those two values are equal, which they are not.

What you want to use is indexOf.

const date = result.find(data => data.draw_date.indexOf('2021-06-30'))
console.log(date);

Upvotes: 1

Alireza Ahmadi
Alireza Ahmadi

Reputation: 9953

You can use includes as below

const result = [
  {
        draw_date: "2021-06-30T00:00:00.000",
        winning_numbers: "24 29 50 65 66 14",
        multiplier: "4"
    },
    {
        draw_date: "2021-06-26T00:00:00.000",
        winning_numbers: "08 31 39 43 60 17",
        multiplier: "3"
    }
];
const date = result.find(data => data.draw_date.includes('2021-06-30'))
console.log(date);

Upvotes: 1

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