"Enhance Angular 2 by including both a key and value for every item within an

I am working with an array of objects like this: 

array = [
  {name: 'name'},
  {name: 'name'},
  {name: 'name'},
  {name: 'name'},
]

My goal is to add a key called '123' to each object in the array, so it should look like this: 

array = [
  {name: 'name', key: '123'},
  {name: 'name', key: '123'},
  {name: 'name', key: '123'},
  {name: 'name', key: '123'},
]

Here's what I've tried so far: 

checked = false;
     this.editObj.forEach(item => item.push(this.checked))

ERROR : item.push is not a function.

Unfortunately, my approach isn't working. Can someone help me figure out the correct way to achieve this?

javascriptarraysangulartypescriptjavascript-objects

Answer №1

let array = [
  {title: 'book'},
  {title: 'movie'},
  {title: 'song'},
  {title: 'game'},
]

let modifiedArray = array.map(item => ({...item , id: 'abc'}));

Answer №2

If you're looking to enhance your code, consider developing a customized dictionary:

array = [
{name: 'name'},
{name: 'name'},
{name: 'name'},
{name: 'name'},
]

var dict = []; // initialize an empty dictionary
for (i = 0; i < array.length; i++) { 

  dict.push({
    key:   "123",
    value: array[i].name
  });
  

}
  console.log(dict);

Answer №3

Here's a recommended approach:

Ensure to include the following code snippet in your project:

this.editObj.forEach((element) => {
  element["key"] = "123";
});
console.log(this.editObj);

Answer №4

The reason your code is not functioning as expected is because you are applying the .push() method on an object instead of an array. Here's a suggestion to resolve this issue:

this.editObj.forEach(item => item["key"] = this.checked);

Answer №5

Except for Internet Explorer 11

Creating a fresh array

const newArray = [{
    name: 'name',
  },
  {
    name: 'name',
  },
  {
    name: 'name',
  },
  {
    name: 'name',
  },
];

console.log(newArray.map(item => ({
  ...item,

  key: '123',
})));

Modifying an existing array

const existingArray = [{
    name: 'name',
  },
  {
    name: 'name',
  },
  {
    name: 'name',
  },
  {
    name: 'name',
  },
];

existingArray.forEach((item) => {
  item.key = '123';
});

console.log(existingArray);

In Internet Explorer 11

var ieArray = [{
    name: 'name',
  },
  {
    name: 'name',
  },
  {
    name: 'name',
  },
  {
    name: 'name',
  },
];

for (var j = 0; j < ieArray.length; j += 1) {
  ieArray[j].key = '123';
}

console.log(ieArray);

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