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')); // true
console.log(userExists('JUMBO')); // falsearray of objects how to check if property has duplicate
var yourArray = [
{Index: 1, Name: "Farley, Charley", EmployeeCode: "12", PaymentType: "Void", CheckDate: "01/04/2012"},
{Index: 2, Name: "Farley, Charley", EmployeeCode: "12", PaymentType: "Void", CheckDate: "01/04/2012"},
{Index: 3, Name: "Tarley, Charley", EmployeeCode: "12", PaymentType: "Void", CheckDate: "01/04/2012"}
];
unique = [...new Set(yourArray.map(propYoureChecking => propYoureChecking.Name))];
if (unique.length === 1) {
console.log(unique);
}Copyright © 2021 Codeinu
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