Filtering an array of objects based on a specific condition in TypeScript

I am trying to filter the array object data where the count of Failed is greater than 0. Unfortunately, the code below is not working as expected.

ngOnInit()
{
  this.employeeService.getProducts().subscribe((data:any) => {
  console.log(data);

  this.products=data.Products.array.forEach(element => {
   i=>i.Failed>0
  });

  });
}

Here are the classes for Products:

export class Productlist {
    Products :Array<Products>
    Page:string
    PageSize:string       
}

export class Products{
    Platform:string
    Compliant:string
    Failed:string
}

Answer №1

When using the forEach method, it simply iterates over all elements in the array without performing any action like filtering.

If you want to filter an array in JavaScript, there is a specific .filter method available.

Typically, you would use it in this way:

this.products = data.Products.filter((product) => product.Failed > 0);

However, based on your class definitions, it seems that the Failed property contains a string instead of a number. In order to compare it, you need to convert the string to a number first.

this.products = data.Products.filter((product) => Number.parseInt(product.Failed) > 0)

Keep in mind that this conversion assumes that the string only contains integer values and not float values.

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