Task - Callback Functions

[akash-coded]

Write a myFilter function that takes 2 parameters: my_array and callback.

Here, my_array is an array of numbers and callback is a function that takes the elements of my_array as its parameter and returns a boolean true if the element is even or false if the element is odd.

The myFilter function should return the filtered array.

Sample Input:
4 5 6 7 8 9

Sample Output
[4, 6, 8]

Write the code for the callback function and provide the implementation of myFilter function:

function myFilter(my_array, callback){
    //Enter your code here
}

[mha77]

function myfilter(a, b){

return b(a)

}

function even(a){
let result = [];
for(let i = 0; i < a.length; i++){
if(a[i] % 2 == 0){
result.push(a[i]);
}
}
return result;
}

let a = [1,2,3,4,5,6,7];
let test = myfilter(a,even);
console.log(test);

[pooja2apr]

function isEven(number) {
return number % 2 == 0;
}

function filter(numbers, fn) {
let results = [];
for (const number of numbers) {
if (fn(number)) {
results.push(number);
}
}
return results;
}
let numbers = [1, 2, 4, 7, 3, 5, 6];
console.log(filter(numbers, isEven));

[Wgjamia]

function myFilter(my_array, callback) {
let results = [];
for (const i of my_array) {
if (callback(i)) {
results.push(i);
}
}
return results;
}

let numArr = [4, 5, 6, 7, 8, 9];

let oddArr = myFilter(numArr, function (n) {
return n % 2 == 0;
});

console.log(oddArr);

[ramprasana]

`function evenoddFinder(num) {
if((Number(num) % 2 ) === 0) {
return true;
} else {
return false;
}

}

function evenNumberFilter(arrayNum, evenoddFinder) {
evenNumber = [];
for(i=0;i<arrayNum.length;i++) {
if(evenoddFinder(arrayNum[i])) {
evenNumber.push(arrayNum[i]);
}
}
return evenNumber;
}

function processElement() {
arrayofNumber = [2,1,3,7,8,10,14,17];
console.log(evenNumberFilter(arrayofNumber, evenoddFinder));
}`

[nidhiprajapati2018]

function fnCallback(a) {
return (a % 2 == 0) ? true : false;
}

function myFilter(my_arr, callback) {
let final = []
for(let a of my_arr) {
if(callback(a)==true) {
final.push(a);
}
}
console.log("Result:", final);
}

myFilter([4, 5, 6, 7, 8, 9], fnCallback);

[Sreelakshmi-cs]

function filter(arr1,callback)
{
let j=0;
for (let i = 0; i < arr1.length; i++)
{
let callback = arr1[i];
if((callback%2)==0)
{
console.log(true);
arr3[j]=callback;
j++;
}
else{
console.log(false);
}
}
}
let arr=[4,5,6,7,8,9];
let arr3=[];
filter(arr,callback=0)
console.log(arr3);

[akash-coded]

The callback is a function that is passed via argument during calling the filter function

[mha77]

function myfilter(a, b){
let result=[]
for(let i = 0; i< a.length; i++){
let test = b(a[i])
if (test){
result.push(a[i])
}
}
return result
}

function even(a){

if(a % 2==0){
    return true
}
else{
    return false
}

}

let a = [1,2,3,4,5,6,7];
let test = myfilter(a,even);
console.log(test);

[jainketan10]

function myFilter(my_array, callback) {
let a = [];
for (const i of my_array) {
if (callback(i)) {
a.push(i);
}
}
return a;
}
var arr=[];
var size=5;
for(var i=0;i<size;i++){
arr[i]=prompt("Enter array value of length 5");
}
let output = myFilter(arr, function (n) {
return n % 2 == 0;
});
console.log(output);

[somitadubey]

function m(my_array, callback) {
let a = [];
for (const i of my_array) {
if (callback(i)) {
a.push(i);
}
}
return a;
}
var arr = [1,2,3,4,5,6];

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

}
let b = m(arr, function (n) {
return n % 2 == 0;
});
console.log(b);

[inderpreet-k-a]

var arr=[4,6,9,8,3];
function filter(arr){
for(i=0;i<arr.length; i++){
var temp=arr[i];
if(temp%2==0){
console.log(arr[i]);
}
}
}
filter(arr);

[akash-coded]

Try to use a second function as a callback