Change the property of all objects with javascript

Question

I created an object with javascript and want to make the "completed" property of all objects true.

codes:

let todos = [
  {
    id: 0,
    title: "Javascript",
    completed: false
  },
  {
    id: 1,
    title: "php",
    completed: false
  },
]

I want to make the completed property of all objects true

function completeAll() { 
  //some codes
 //I'm running with button
} 

Answer 1

Use map.

let todos = [
    {
      id: 0,
      title: "Javascript",
      completed: false
    },
    {
      id: 1,
      title: "php",
      completed: false
    },
];

const output = todos.map(({completed, ...rest}) => ({...rest, completed: true}));

console.log(output);

Answer 2

Use . notation to access and change properties in the object

let todos = [
  {
    id: 0,
    title: "Javascript",
    completed: false
  },
  {
    id: 1,
    title: "php",
    completed: false
  },
]
todos.forEach(function(e){
e.completed=true;
})
console.log(todos)