nodejs check duplicates property's from object in array

array 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);
}

Posted by: Guest on May-20-2020

const values = [{id: 10, name: 'someName1'}, {id: 10, name: 'someName2'}, {id: 11, name:'someName3'}, {id: 12, name: 'someName4'}]; const lookup = values.reduce((a, e) => { a[e.id] = ++a[e.id] || 0; return a; }, {}); console.log(values.filter(e => lookup[e.id])); Run code snippetHide results

Code answers related to "nodejs check duplicates property's from object in array"

Browse Popular Code Answers by Language

Answers for "nodejs check duplicates property's from object in array"

Code answers related to "nodejs check duplicates property's from object in array"

Code answers related to "TypeScript"

Browse Popular Code Answers by Language

Popular Programming Languages

Advertisements

Company

Compilers

Help

Connect with us