[Solved] Javascript – print all names in array containing multiple objects [closed]

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Introduction

Javascript is a powerful programming language that can be used to manipulate data in a variety of ways. In this tutorial, we will be looking at how to print all names in an array containing multiple objects. We will be using the forEach() method to iterate through the array and print out each name. We will also be discussing how to access the properties of each object in the array. By the end of this tutorial, you should have a better understanding of how to work with arrays containing multiple objects in Javascript.

Solution

// Using a for loop

let arr = [
{name: ‘John’, age: 25},
{name: ‘Jane’, age: 22},
{name: ‘Bob’, age: 27}
];

for (let i = 0; i < arr.length; i++) { console.log(arr[i].name); } // Using forEach arr.forEach(person => {
console.log(person.name);
});


  1. Extract only the students with grade 80 or higher with Array.filter.
  2. Map the remaining students into a new format using Array.map.

Result:

let students = [{
  fname: "Jane",
  lname: "Brazier",
  snum: "100366942",
  agrade: 67.59127376966494,
  tgrade: 64.86530868914188,
  egrade: 70.52944558104066
}, {
  fname: "Ricardo",
  lname: "Allen",
  snum: "100345641",
  agrade: 65.80370345301014,
  tgrade: 75.40211705841241,
  egrade: 55.39348896202821
}, {
  fname: "Mary",
  lname: "Hernandez",
  snum: "100221207",
  agrade: 71.20761408935981,
  tgrade: 71.37529197926764,
  egrade: 75.82038980457698
}, {
  fname: "James",
  lname: "Johnson",
  snum: "100200842",
  agrade: 72.5791318299902,
  tgrade: 81.65883679807183,
  egrade: 85.19664228946989
}, {
  fname: "Stephanie",
  lname: "Ottesen",
  snum: "100225067",
  agrade: 88.19738810849226,
  tgrade: 84.68339894849353,
  egrade: 82.23947265645927
}, {
  fname: "Martin",
  lname: "Conway",
  snum: "100358379",
  agrade: 71.28759059295344,
  tgrade: 79.13194908266965,
  egrade: 77.61880623797336
}, {
  fname: "Andrew",
  lname: "Weaver",
  snum: "100376243",
  agrade: 70.01798139244363,
  tgrade: 78.64811561086252,
  egrade: 78.68650242850617
}, {
  fname: "Rhonda",
  lname: "Ford",
  snum: "100296902",
  agrade: 56.14580882764524,
  tgrade: 63.9209865108888,
  egrade: 60.186613967770334
}, {
  fname: "Leonard",
  lname: "Arvan",
  snum: "100220616",
  agrade: 80.67865525396981,
  tgrade: 92.73557717342663,
  egrade: 88.32126970338336
}, {
  fname: "William",
  lname: "Culler",
  snum: "100307637",
  agrade: 65.75251699043244,
  tgrade: 62.18172136246404,
  egrade: 63.065185542933094
}, {
  fname: "David",
  lname: "Nakasone",
  snum: "100353719",
  agrade: 62.63260239883763,
  tgrade: 58.352794766947866,
  egrade: 59.80461902691901
}, {
  fname: "Maria",
  lname: "Young",
  snum: "100311331",
  agrade: 70.13767021264486,
  tgrade: 76.09348747016176,
  egrade: 79.99207130929622
}, {
  fname: "Beverly",
  lname: "Mott",
  snum: "100325579",
  agrade: 83.08140516644137,
  tgrade: 94.80666640692787,
  egrade: 85.15875656837004
}, {
  fname: "Patrick",
  lname: "Francis",
  snum: "100257773",
  agrade: 66.79534616079296,
  tgrade: 47.744928296560076,
  egrade: 64.05723052865763
}, {
  fname: "Tracy",
  lname: "Bonds",
  snum: "100233277",
  agrade: 70.2289028670531,
  tgrade: 65.32258294210156,
  egrade: 77.04816321925091
}, {
  fname: "Richard",
  lname: "Akers",
  snum: "100216705",
  agrade: 52.446722363991015,
  tgrade: 49.205597783687374,
  egrade: 53.72940974941982
}, {
  fname: "Beatrice",
  lname: "Jaco",
  snum: "100233935",
  agrade: 81.89338938644417,
  tgrade: 71.05459078971688,
  egrade: 83.08235397281308
}, {
  fname: "Guy",
  lname: "Wendelin",
  snum: "100336379",
  agrade: 68.17788319655493,
  tgrade: 63.82273085525137,
  egrade: 68.31559946786807
}, {
  fname: "Logan",
  lname: "Olsen",
  snum: "100265736",
  agrade: 59.89037739094347,
  tgrade: 71.76550299333657,
  egrade: 64.61665695830132
}, {
  fname: "Gene",
  lname: "Jeanlouis",
  snum: "100341666",
  agrade: 74.16481515505846,
  tgrade: 68.20592386917109,
  egrade: 78.25975050135006
}];

const result = students
  .filter(student => student.egrade >= 80)
  .map(student => `${student.fname} ${student.lname}`);
  
console.log(result);

solved Javascript – print all names in array containing multiple objects [closed]


If you have an array containing multiple objects and you want to print all the names in the array, you can use the following JavaScript code:

var array = [
    {name: 'John', age: 25},
    {name: 'Jane', age: 30},
    {name: 'Bob', age: 40}
];

array.forEach(function(item) {
    console.log(item.name);
});

This code will loop through the array and print out the name of each object. The output will be:

John
Jane
Bob

This code can be used to print out any property of the objects in the array, not just the name.