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how to check if an element exists in an array of objects js

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Crowded Crayfish answered on November 3, 2020 Popularity 10/10 Helpfulness 4/10

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how to check if an element exists in an array of objects js

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-1

var arr = [{ id: 1, username: 'fred' }, 
  { id: 2, username: 'bill'}, 
  { id: 3, username: 'ted' }];

function userExists(username) {
  return arr.some(function(el) {
    return el.username === username;
  }); 
}

console.log(userExists('fred')); // true
console.log(userExists('bred')); // false

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: stackoverflow.com

Tags: element exists javascript

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Contributed on Nov 03 2020

Crowded Crayfish

0 Answers Avg Quality 2/10

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javascript check if value exists in array of objects

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var arr = [{ id: 1, name: 'JOHN' }, 
  { id: 2, name: 'JENNIE'}, 
  { id: 3, name: 'JENNAH' }];

function userExists(name) {
  return arr.some(function(el) {
    return el.name === name;
  }); 
}

console.log(userExists('JOHN')); // true
console.log(userExists('JUMBO')); // false

Popularity 10/10 Helpfulness 8/10 Language javascript

Source: Grepper

Tags: exists ex

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Contributed on Jan 09 2021

Vivacious Vendace

0 Answers Avg Quality 2/10

check if object value already exists in array javascript

Comment

// An array of objects
var persons = [{name: "Harry"}, {name: "Alice"}, {name: "Peter"}];

// Find if the array contains an object by comparing the property value
if(persons.some(person => person.name === "Peter")){
    alert("Object found inside the array.");
} else{
    alert("Object not found.");
}

Popularity 9/10 Helpfulness 6/10 Language javascript

Source: www.tutorialrepublic.com

Tags: exists ex

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Contributed on Dec 01 2022

Aiman Tariq

0 Answers Avg Quality 2/10

check if object exists in array javascript

Comment

Simply do:

carBrands.indexOf(car1);

It will return you the index (position in the array) of car1. It will return -1 if car1 was not found in the array.

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: exists ex

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Contributed on Jan 30 2023

Saksham Gupta

0 Answers Avg Quality 2/10

how to check if object exists in array javascript

Comment

function containsObject(obj, list) {
    var i;
    for (i = 0; i < list.length; i++) {
        if (list[i] === obj) {
            return true;
        }
    }

    return false;
}

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: stackoverflow.com

Tags: exists ex

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Contributed on Jul 04 2022

mukashwasti_

0 Answers Avg Quality 2/10

how to check if an element exists in an array of objects js

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