Js:Convert Array of Strings to Array of Objects

JS : Convert Array of Strings to Array of Objects

You can use .map() for this. It passes the index into the callback.

myArray = myArray.map((str, index) => ({ value: str, id: index + 1 }));

Convert array of strings into an array of objects

Another approach - Array#reduce.

var arr = ["124857202", "500255104", "78573M104"];var res = arr.reduce(function(s, a){    s.push({name: a});    return s;  }, [])  console.log(res);

Convert array of string into array of object with different keys JS

If you only have one array containing one set of data there's no need to use map. Destructure the array elements, and then just create a new object using those variables.

const arr = [ '612772d3d8b2b2000482fc3c', '15', '15', 'Basketball', '2021' ];

const [ id, amount, bet, sport, date ] = arr;
const obj = [ { id, amount, bet, sport, date } ];
console.log(obj);

Convert Array to Object

ECMAScript 6 introduces the easily polyfillable Object.assign:

The Object.assign() method is used to copy the values of all
enumerable own properties from one or more source objects to a target
object. It will return the target object.

Object.assign({}, ['a','b','c']); // {0:"a", 1:"b", 2:"c"}

The own length property of the array is not copied because it isn't enumerable.

Also, you can use ES8 spread syntax on objects to achieve the same result:

{ ...['a', 'b', 'c'] }

For custom keys you can use reduce:

['a', 'b', 'c'].reduce((a, v) => ({ ...a, [v]: v}), {}) 
// { a: "a", b: "b", c: "c" }

Convert array of strings into an array of objects in javascript?

You can use array#map to modify each string of the original array, and string#split to break each string into it's key: value pairs.

Full code:

let arr = [
  "test: Yes, name: user1, number: +9190000000",
  "test: Yes, name: user2, number: +9162000000",
];

arr = arr.map((objStr) => {
  let object = {};

  objStr.split(",").forEach((pair) => {
    let [key, value] = pair.split(":");
    object[key.trim()] = value.trim();
  });

  return object;
});

console.log(arr);

How to convert an Array to Array of Object in Javascript

Try the "map" function from the array:

const output = [ 'John', 'Jane' ].map(name => ({name}));console.log(output);

How to convert an Array to Array of objects with same keys in Javascript?

You can do this using Array.map, which allows you to specify a function that returns a new item to replace in the array.

arr.map(o => ({ name: o }))

Here's one without fancy arrow function shorthand, just in case you are confused.

arr.map(function(o) {
   return {
      name: o,
   }
})

How to convert an array of type String to an array object in javascript

What you have here is a JSON string. You can parse it to get the object / array:

var array = JSON.parse(arrayString)

Edit: I see your JSON string has single quotes. You need to replace all of them with double quotes before parsing:

JSON.parse(arrayString.replace(/'/g, '"'))

Function to convert array of strings into array of objects

Change the following line :

o.key = array[i] 
//change
o[key] = array[i]

function arrayToObjects(array, key) {
    const objectArray = []; // To return an array later.
    this.key = key;
    for (const element of array) {
        const o = new Object();
        o[key] = element;
        objectArray.push(o);
    }
   return objectArray;
}

Convert array of objects to array of strings in mongodb

It seems that I was over complicating this. I was able to achieve my desired result by doing the following:

db.classes.aggregate( [
   {
      $lookup:
         {
            from: "members",
            localField: "enrollmentlist",
            foreignField: "name",
            as: "enrollee_info"
         }
   },
   {
      $project:
          {
              "_id": 1,
              "title": 1,
              "days": 1,
              "enrollee_names": "$enrollee_info.name"
          }
   } 
] )

Result:

[
    {
        "id": 1,
        "title": "Reading is ...",
        "days": [
            "M",
            "W",
            "F"
        ],
        "names": [
            "artie",
            "pandabear",
            "giraffe2"
        ]
    },
    {
        "id": 2,
        "title": "But Writing ...",
        "days": [
            "T",
            "F"
        ],
        "names": [
            "artie",
            "giraffe1"
        ]
    }
]

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