ds-algo-study/DS-n-Algos/ALGO/callbacks-solution/problems/04-my-filter.js

Just experimenting with publishing a package

/*******************************************************************************
Write a function `myFilter` that accepts an array and a callback as arguments.
The function should call the callback on each element of the array, passing in
the element. The function should return a new array containing
the elements that result in true when passed to the callback.

Do not use the built in Array#filter.

Examples:

let result1 = myFilter([5, 7, 4, 3, 8], function (n) {
    return n % 2 === 0;
});
console.log(result1);       // [ 4, 8 ]

let result2 = myFilter(['choose', 'big', 'words', 'only'], function (s) {
    return s.length > 3;
});
console.log(result2);      // ['choose', 'words', 'only']
*******************************************************************************/

function myFilter(array, cb) {
    let filtered = [];
    array.forEach(function(ele, i) {
        if (cb(ele)) {
            filtered.push(ele)
        }
    });
    return filtered;
}

//******************---------------------******************\\*/
module.exports = myFilter;