How to remove a simple specific key value pair from all objects and add to one specific object insid-CodePudding

I want to add a key and value(i.e. age:15) to an object which has name as email and remove it(age) from other objects for the below array of object.

[
  {
    name: 'test',
    lname: 'last',
    age: 5
  },
  {
    name: 'test1',
    lname: 'last1',
    age: 15
  },
  {
    name: 'email',
    lname: 'last',
  },
]

i.e. I want the below output.

[
  {
    name: 'test',
    lname: 'last'
  },
  {
    name: 'test1',
    lname: 'last1'
  },
  {
    name: 'email',
    lname: 'last',
    age: 15
  },
]

Thanks

CodePudding user response：

What you can do here is find the index of the object that has name as "email". Once you find the object, add the desired age value as a new property called age. Finally, you can use filter to filter the items that doesn't have name as "email" and delete the age property.

var data = [ { name: 'test', lname: 'last', age: 5 }, { name: 'test1', lname: 'last1', age: 15 }, { name: 'email', lname: 'last', }, ]

function myFunction(age) {
  let indexOfEmail = data.findIndex(element => element.name == "email")
  if (indexOfEmail > -1) {
    data[indexOfEmail].age = age
    data.filter(element => element.name !== "email").map(sub => delete sub['age'])
  }
}

myFunction(15)
console.log(data)

CodePudding user response：

You can do it by using map method, like this:

const data = [
  {
    name: 'test',
    lname: 'last',
    age: 5
  },
  {
    name: 'test1',
    lname: 'last1',
    age: 15
  },
  {
    name: 'email',
    lname: 'last',
  },
];
const newData = data.map(({age, ...rest})=> rest.name == 'email' ? {...rest, age: 15} : rest)
console.log(newData);

CodePudding user response：

You can do like this:


const items = [
  {
    name: 'test',
    lname: 'last',
    age: 5
  },
  {
    name: 'test1',
    lname: 'last1',
    age: 15
  },
  {
    name: 'email',
    lname: 'last',
  },
];

const newItems = items.filter((item) => {
    if (item.name.includes("email")) {
      return (item.age = 15);
    }
    if (JSON.stringify(items).includes("email")) {
      delete item.age;
    }
    return item;
});

console.log(newItems);