how to check if an array includes an object in javascript code example
Example 1: check if object is present in array javascript
function containsObject(obj, list) {
var i;
for (i = 0; i < list.length; i++) {
if (list[i] === obj) {
return true;
}
}
return false;
}
function containsObject(obj, list) {
var x;
for (x in list) {
if (list.hasOwnProperty(x) && list[x] === obj) {
return true;
}
}
return false;
}
Example 2: how to Check if an array contains an object in javascript
const myArrayObj = [{
'username': 'Player 1',
'email': '[email protected]'
}, {
'username': 'Player 2',
'email': '[email protected]'
}];
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);
Example 3: check object in array javascript
var obj = {a: 5};
var array = [obj, "string", 5];
array.indexOf(obj) !== -1
Example 4: javascript array contains object
if (array.index(object) !== -1) {
console.log(`my object is in my array`)
}
if(array.includes(oject)) {
console.log(`my object is in my array`)
}
Example 5: check if property has value in array javascript
const magenicVendorExists = vendors.reduce((accumulator, vendor) => (accumulator||vendor.Name === "Magenic"), false);