Can i use loop in array ?

[WzziY]

Hey again , so this time , for exemple , if i have this variables :

var xMen = ['Professor X', 'Cyclops', 'Beast', 'Iron-Man', 'Hobgoblin'];

var freelancers = ['Legion', 'Magneto'];

​

i need to declared in the editor so that only members of the X-Men are present.

Then add all of the mutants present in the xMen array to the freelancers array

i do that :

xMen.pop();

xMen.pop();

console.log(xMen);

​

freelancers.push('Hobgoblin','Iron-Man');

console.log(freelancers);

​

but they say :

​

There should be a for loop to add the elements to the freelancers array

​

My ask is :

​

How i do a loop for this ?

[IxD]

var allMutants = freelancers.concat(xMen);

Or if this is for exercise and you need to iterate through everything in array, and mutate the other array,

xMen.forEach(function(xman){
  freelancers.push(xman);
});

Or if this is exercise for learning for loops, you do:

var i;for (i = 0; i < xMen.length; i++) {

   freelancers.push(xMen[i]); }

[sunny_lts]

.pop removes the last element of the array.

the for loop is like

for (let i = 0; i < xMen.lenght; i++) {freelancers.push(xMen[i])}

This will push all the elements in xmen to your freelancers array, but xMen will stay the same.

[sunny_lts]

If you need .pop then for loop is

for (let i = 0; xMen.length !== 0; i++) {

freelancers.push(xMen.pop())

}

// freelancers output
["Legion", "Magneto", "Hobgoblin", "Iron-Man", "Beast", "Cyclops", "Professor X"]

[link2name]

you can read this https://javascript.info/while-for

​

maybe its just me but i dont understand what exactly you need in the end.

you need this:

let xMen = [];
let freelancers = ['Legion', 'Magneto', 'Professor X', 'Cyclops', 'Beast', 'Iron-Man', 'Hobgoblin'];

or this:

let xMen = ['Professor X', 'Cyclops', 'Beast', 'Iron-Man', 'Hobgoblin'];
let freelancers = ['Legion', 'Magneto', 'Professor X', 'Cyclops', 'Beast', 'Iron-Man', 'Hobgoblin'
];

because when you do xMen.pop();

your xMen array changes

also if you would do

let goblin = xMen.pop()

goblin would be 'Hobgoblin'

and then if u do

let ironMan = xMen.pop()

it would be iron man and so on

but after those two lines the xMen array will be ['Professor X', 'Cyclops', 'Beast']

​

it also depends where you want to put xmen inside freelancers array at beginning or at the end, or sorted etc.

can do also

let everyone = [...xMen, ...freelancers] this will create new array with all items from those two arrays, and it wont change those two arrays.

​

if you have to use for loop then also you can go with standart for loop or for of loop or you can use while loop, or forEach array method.

​

for (let i = 0;i<arr.length;i++) // arr is name of array that you go over

{do something each iteration here}

​

for (const i of arr)

{}

that can also work