Get JSON values from a condition-CodePudding

I have a Typescript project with an array and a JSON object. What I do is take the value of a property of the object, where the value of the other property is in the array.

This is the array:

let country: string[] = [ 'AR', 'ES'];

This is the object:

let objJson = [
  {
    "codCountry": "AR",
    "desCountry": "ARGENTINA"
  },
  {
    "codCountry": "CO",
    "desCountry": "COLOMBIA"
  },
  {
    "codCountry": "ES",
    "desCountry": "SPAIN"
  }];

This is the loop:

for (let getO of objJson) {
    for (let getC of country) {
      if (getO.codCountry == getC) {
        console.log(getO.desCountry)
      }
    }
  }

This is what I get:

> ARGENTINA
> SPAIN

My problem is: is there any way to improve this to avoid the need to iterate twice? In this example the arrays are small but I imagine that if they are larger this process would take a long time, I would like to know what is the most efficient way to do it. this.

CodePudding user response：

In the first loop use country.includes(getO.codCountry) so the code reduces to

for (let getO of objJson){
    if (country.includes(getO.codCountry))
        console.log(getO.desCountry)
}

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes