I have an the following array of items:

[
{
  url: "www.google.com",
  name: "name1"
},
{
  url: "www.google.com2",
  name: "name1"
},
{
  url: "www.google.com3",
  name: "name1"
}
]

and a variable:

let url = "www.google.com2"

How would I check if the variable exists in the array, and if it exists, how would I print the specific object that marches the variable?

I am able to check if the variable exists in the array, but how would I print the specific object that has the same url as the variable?

CodePudding user response：

• you can loop though an array via forEach method
• and add if condition to check if url is matching and inside condition console log entire(found) object

const input = [
{
url: "www.google.com",
name: "name1"
},
{
url: "www.google.com2",
name: "name1"
},
{
url: "www.google.com3",
name: "name1"
}
]


let url = "www.google.com2"

input.forEach(object => {
  if(object.url === url) {
  console.log(object)
  }
})

• or if would like to find only one element in the array

• you can use find method

• also you can store found element in the variable

const input = [
{
url: "www.google.com",
name: "name1"
},
{
url: "www.google.com2",
name: "name1"
},
{
url: "www.google.com3",
name: "name1"
}
]


let url = "www.google.com2"

const foundObject = input.find(object => object.url === url)

console.log('foundObject', foundObject)

CodePudding user response：

You can use JS filter()function for that. Filter fives you all matches. If you sure that your input array contains only once this url then you can use: r[0] ?? null; Then you will get only the object.

const input = [
  {
  url: "www.google.com",
  name: "name1"
  },
  {
  url: "www.google.com2",
  name: "name1"
  },
  {
  url: "www.google.com3",
  name: "name1"
  }
]
const url = 'www.google.com2';
const r = input.filter(e => e.url === url);

console.log('result: ',r);
console.log('resultOne: ',r[0] ?? 'nothing found');

CodePudding user response：

If you want to print all the objects that contain the desired url you should go with @shutsman's answer.

If you are sure that there is only one object contained with the property (incase of an id or something) you could use:

const input = [
{
url: "www.google.com",
name: "name1"
},
{
url: "www.google.com2",
name: "name1"
},
{
url: "www.google.com3",
name: "name1"
}
]


let url = "www.google.com2"

console.log(input.find(obj => obj.url === url))