how to check object exist in array javascript code example
Example 1: javascript check if value exists in array of objects
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'));
console.log(userExists('JUMBO'));
Example 2: how to check if an element exists in an array of objects js
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'));
console.log(userExists('bred'));
Example 3: check object in array javascript
var obj = {a: 5};
var array = [obj, "string", 5];
array.indexOf(obj) !== -1