Js create object from object keys and values code example

Example 1: object keys javascript

const object1 = {
  a: 'somestring',
  b: 42,
  c: false
};

console.log(Object.keys(object1));
// expected output: Array ["a", "b", "c"]

Example 2: javascript create object key from variable

//For ES6 and Babel
{
    [yourKeyVariable]: "yourValue",
}

// ES5 Alternative
// Create the object first, then use [] to set your variable as a key
var yourObject = {};

yourObject[yourKeyVariable] = "yourValue";

Example 3: js create object with keys

var users = [{userId: "1", name: 'harald'}, {userId: "2", name: 'jamie'}];    
var obj = {};
users.forEach(user => {
  obj = {
    ...obj,
    [user.userId]: user,
  }
})
console.log(obj)
// {
//   1: {userId: "1", name: "harald"}
//   2: {userId: "2", name: "jamie"}
// }