CODEWITHSUNDEEP
arraystypescript
James
James

Reputation: 33

TypeScript Sort Object by Object in Array

Does anyone know how sort Array with Person by value TaskTime in tasks?

export class Person {
    Id: string;
    Email: string;
    FirstName: string;
    LastName: string;
    Presence: boolean;
    RegisterTime: Date;
    tasks: Array<Task>
}

export class Task {
    TaskName: string;
    DoneTask: boolean;
    TaskTime: number;
}

Thanks for help

Upvotes: 3

Views: 9582

Answers (2)

Richard
Richard

Reputation: 2148

Try to follow such way to sort your array. The sample code below will sort the array in descending order by blockId field. 

this.itemList.sort((left, right): number => {
  if (left.blockId < right.blockId) return 1;
  if (left.blockId > right.blockId) return -1;
  return 0;
});

Upvotes: 3

Nitzan Tomer
Nitzan Tomer

Reputation: 164129

The javascript Array object comes with a builtin sort method, you pass it a compare function like this:

function compare(a, b) {
    if (a is less than b by some ordering criterion) {
        return -1;
    }

    if (a is greater than b by the ordering criterion) {
        return 1;
    }

    // a must be equal to b
    return 0;
}

So in your case:

let person = new Person();
console.log(person.tasks.sort((task1, task2) => task1.TaskTime - task2.TaskTime));

Upvotes: 5

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