Javascript

Search

if object is array javascript

Array.isArray(object);

Comment

How to check if an object is an array or not?

var arrayList = [1 , 2, 3];
console.log(Array.isArray(arrayList)) // true
// method 1
if(Array.isArray(arrayList)){
    console.log("is array")
}
// method 2
if(Object.prototype.toString.call(arrayList) === '[object Array]') {
  console.log('Array!');
}

Comment

javascript is object array

/* The Array.isArray() method indicates whether 
the passed value is an array. */

let example1 = [1, 2, 3];
console.log(Array.isArray(example1)); // → true

let example2 = {a: 1, b: 2,c: 3};
console.log(Array.isArray(example2)); // → false

Comment

check object in array javascript

var obj = {a: 5};
var array = [obj, "string", 5]; // Must be same object
array.indexOf(obj) !== -1 // True

Comment

Check if an array contains a object in javascript

const john = {
    'name': 'John Doe',
    'email': 'john.doe@example.com'
};
const jane = {
    'name': 'Jane Doe',
    'email': 'jane.doe@example.com'
};

const list = [john, jane];
let result = list.includes(john);

console.log(result); // true

Comment

How can I check if an object is an array

In modern browsers you can do:

Array.isArray(obj)

Comment

JavaScript Check an object is an array or not

<!DOCTYPE html>
<html>
<body>
<p>Click the button to check if "fruits" is an array.</p>
<button onclick="checkArrayValueOrNot()" id="btnClick">Click </button>
<p id="demo"></p>
<script>
function checkArrayValueOrNot() {
var states =["Maharashtra","Tamil Nadu","Uttar Pradesh","West Bengal","Delhi"];
var x = document.getElementById("demo");
x.innerHTML = Array.isArray(states);
}
</script>
</body>

Comment

Check if an array contains a object in javascript

const list = [{
    'name': 'John Doe',
    'email': 'john.doe@example.com'
}, {
    'name': 'Jane Doe',
    'email': 'jane.doe@example.com'
}];

const isEqual = (first, second) => {
    return JSON.stringify(first) === JSON.stringify(second);
}

const result = list.some(e => isEqual(e, {
    'name': 'John Doe',
    'email': 'john.doe@example.com'
}));

console.log(result); // true

Comment

PREVIOUS	NEXT

Code Example
Javascript :: javascript slice
Javascript :: invoking jquery validator
Javascript :: divide symbol javascript
Javascript :: js dom siblings
Javascript :: uncheck multiple checkboxes javascript
Javascript :: javascript get character from string
Javascript :: javascript select function
Javascript :: express middleware pass parameter
Javascript :: destructuring objects
Javascript :: javascript get magnitude of number
Javascript :: Nestjs download
Javascript :: How To Take Screenshots In The Browser Using JavaScript
Javascript :: react-router useNavigate
Javascript :: put new attribute on html tag using javascript
Javascript :: indexof method
Javascript :: mod operation in shopify
Javascript :: Javascript make alert box
Javascript :: empty check on django json field
Javascript :: instalar bootstrap en react
Javascript :: javascript catch specific error
Javascript :: html anchor tag javascript confirm
Javascript :: pm2 config changes update environments
Javascript :: leaflet tile service
Javascript :: How to convert a canvas to an image javascript
Javascript :: change li position in ul jquery
Javascript :: circular queue implementation using js
Javascript :: json arrays
Javascript :: open youtube video at specific time javascript
Javascript :: javascript typeof
Javascript :: react comments

Search

JAVASCRIPT

if object is array javascript

How to check if an object is an array or not?

javascript is object array

check object in array javascript

Check if an array contains a object in javascript

How can I check if an object is an array

JavaScript Check an object is an array or not

Check if an array contains a object in javascript

ADD CONTENT