if object is array javascript
Array.isArray(object);how to Check if an array contains an object in javascript
// To check if an array contains an Object
const myArrayObj = [{
'username': 'Player 1',
'email': '[email protected]'
}, {
'username': 'Player 2',
'email': '[email protected]'
}];
// Create a helper function to compear the objects
const isEqual = (first, second) => {
return JSON.stringify(first) === JSON.stringify(second);
}
const result = myArrayObj.some(e => isEqual(e, {
'username': 'Player 1',
'email': '[email protected]'
}));
console.log(result); // truecheck object in array javascript
var obj = {a: 5};
var array = [obj, "string", 5]; // Must be same object
array.indexOf(obj) !== -1 // Truecheck if object is present in array javascript
//Use something like this:
function containsObject(obj, list) {
var i;
for (i = 0; i < list.length; i++) {
if (list[i] === obj) {
return true;
}
}
return false;
}
//In this case, containsObject(car4, carBrands) is true. Remove the carBrands.push(car4); call and it will return false instead. If you later expand to using objects to store these other car objects instead of using arrays, you could use something like this instead:
function containsObject(obj, list) {
var x;
for (x in list) {
if (list.hasOwnProperty(x) && list[x] === obj) {
return true;
}
}
return false;
}check if property has value in array javascript
const magenicVendorExists = vendors.reduce((accumulator, vendor) => (accumulator||vendor.Name === "Magenic"), false);Copyright © 2021 Codeinu
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