How can check string value that contain in main string value in array by javascript

Question

I want to check user.uid that contain or not in combined user ids. here is combined ids in arrays

getid Array [
  "E8R52y6dD8XI3shXhnhS9pVzUpe26Lf5bHwzCSbI2bmoMv7KuduMGwe2",
  "KgRwTDgenjYpODPxRaldDQy9nnH36Lf5bHwzCSbI2bmoMv7KuduMGwe2",
  "pNv0iKlZ6xVOl0fFOZSoXJoPuVx2E8R52y6dD8XI3shXhnhS9pVzUpe2",
]

here is user.uid

pNv0iKlZ6xVOl0fFOZSoXJoPuVx2

I want to get result is my user.uid is in or not in this combined Id arrays.

const uid = user.uid in getId ? yes : no

(or ) how can check this condition .I not know. I not want to remove my user.uid from combined id , I just want to check my user.uid is in or not in this combined Id. can someone help me?

Vineesh · Accepted Answer · 2021-12-26 13:01:12Z

1

You can simply check using array functions like filter, find , findIndex, some

let array = [
  "E8R52y6dD8XI3shXhnhS9pVzUpe26Lf5bHwzCSbI2bmoMv7KuduMGwe2",
  "KgRwTDgenjYpODPxRaldDQy9nnH36Lf5bHwzCSbI2bmoMv7KuduMGwe2",
  "pNv0iKlZ6xVOl0fFOZSoXJoPuVx2E8R52y6dD8XI3shXhnhS9pVzUpe2",
];

let userId = 'pNv0iKlZ6xVOl0fFOZSoXJoPuVx2';

const exist = array.filter(id => id.includes(userId)).length > 0;

//Using some method

const exist1 = array.some(id => id.includes(userId));

console.log(exist, exist1);

edited Dec 26, 2021 at 13:01

answered Dec 26, 2021 at 12:55

Vineesh

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2 Comments

charlietfl Over a year ago

some() is simpler than filter and doesn't require creating a new array

Vineesh Over a year ago

Updated the code with some method, Thanks

arvir · Accepted Answer · 2021-12-26 13:12:09Z

0

If you just want to get a boolean value indicating if element is in the array or not, you can simply use getId.includes(user.uid). Check out this MDN link if want to know more about Array.prototype.includes()

const arr = [  "E8R52y6dD8XI3shXhnhS9pVzUpe26Lf5bHwzCSbI2bmoMv7KuduMGwe2",  "KgRwTDgenjYpODPxRaldDQy9nnH36Lf5bHwzCSbI2bmoMv7KuduMGwe2",  "pNv0iKlZ6xVOl0fFOZSoXJoPuVx2E8R52y6dD8XI3shXhnhS9pVzUpe2",
]

const invalidId = 'pNv0iKlZ6xVOl0fFOZSoXJoPuVx2'
const validId = "E8R52y6dD8XI3shXhnhS9pVzUpe26Lf5bHwzCSbI2bmoMv7KuduMGwe2"

const arrayHasInvalidId = arr.includes(invalidId)
const arrayHasValidId = arr.includes(validId)


console.log(arrayHasInvalidId,arrayHasValidId);

edited Dec 26, 2021 at 13:12

answered Dec 26, 2021 at 13:03

arvir

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