Transferring Arrays in Angular: A Step-by-Step Guide

Question

Transferring Arrays in Angular: A Step-by-Step Guide

I am trying to assign one array to another

        orders = [
           {
            'id': PROCESSING,
            'displayName': 'Processing'
           },
           {
            'id': SHIPPED,
            'displayName': 'Shipped'
           }
        ];

        cloneOrders = [];

setOrders() {
        this.orders.forEach((order: any) => {
                this.cloneOrders = order;
        });
    }

However, when I attempt to access the values of 'cloneOrders' in another function, it returns an empty array

getOrders(status, minutes) {
        this.cloneOrders .forEach((order: any) => {
                console.log(order);
        });
    }

Both functions exist in the same component. Can someone please assist me with resolving this issue? Thank you.

angular typescript

Answer 1

Answer №1

Check out this example

updateOrders() {
        this.newOrders = [...this.orders];
    }

Keep up the good work and happy coding!

Answer 2

Check out this example

updateOrders() {
        this.newOrders = [...this.orders];
    }

Keep up the good work and happy coding!

Answer 3

Answer №2

In order to populate an array, it is necessary to utilize the .push method.

this.orders.forEach((order: any) => {
       this.cloneOrders.push(order);
 });

An alternative approach using ES6 and the spread operator can simplify the process:

setOrders() {
        this.cloneOrders= [...this.orders];
}

Answer 4

In order to populate an array, it is necessary to utilize the .push method.

this.orders.forEach((order: any) => {
       this.cloneOrders.push(order);
 });

An alternative approach using ES6 and the spread operator can simplify the process:

setOrders() {
        this.cloneOrders= [...this.orders];
}

Answer 5

Answer №3

For those in need of deep cloning -

let clonedItems = this.cloneOrders.map(item => Object.assign({}, item));

Answer 6

For those in need of deep cloning -

let clonedItems = this.cloneOrders.map(item => Object.assign({}, item));

Answer 7

Answer №4

Instead of assigning a new object from orders to cloneOrders every time, make sure to push the orders in cloneOrders using the following function:

updateOrdersList() {
        this.orders.forEach((order: any) => {
                this.cloneOrders.push(order);
        });
    }

Answer 8

Instead of assigning a new object from orders to cloneOrders every time, make sure to push the orders in cloneOrders using the following function:

updateOrdersList() {
        this.orders.forEach((order: any) => {
                this.cloneOrders.push(order);
        });
    }

Answer 9

Answer №5

One way to accomplish this is by utilizing the spread operator in ES6.

items = [
 {'id': PENDING,'displayName': 'Pending'},
 {'id': COMPLETED,'displayName': 'Completed'}
];

copiedItems = [];

copyItems(){
  this.copiedItems= [...this.items];
}

Answer 10

One way to accomplish this is by utilizing the spread operator in ES6.

items = [
 {'id': PENDING,'displayName': 'Pending'},
 {'id': COMPLETED,'displayName': 'Completed'}
];

copiedItems = [];

copyItems(){
  this.copiedItems= [...this.items];
}

Transferring Arrays in Angular: A Step-by-Step Guide

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

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