I’m having a problem manipulating an array of objects inside another array.I created an example to explain what I need. So here we have this array: array1 = [ { "first": "A", "second": [ "one" ] }, { "first": "A", "second": [ "three" ] }, { "first": "C", "second": [ "four" ] }, { "first":… Read More Manipulate an array of objects inside another array

var numbers = [ 1, 2, -2, 6, -5, 9, 1.02, 45, -69, 77, -12, 2, 8, -2, -4, 59, 7, -3, ]; function arrAbsoluteValues(arr) { arr = arr.map((s) => Math.abs(s)); } console.log(arrAbsoluteValues(numbers)); I’m trying to get array that would convert all negative numbers into positive, but I’m getting undefined. output I expect: [ 1,… Read More Convert array of negative numbers in to array of possitives

I have an array of strings, amount and a percentage. Every key is found in the object. Its value is equal to the previous value plus the percentage. This is the code I wrote: const keys = [‘a’, ‘b’, ‘c’]; const amount = 300; const precentage = 0.5; const obj = {}; let prevAmount =… Read More Array by percentage of the previous value

I have the following sample data in a .txt file 111, Sybil, 21 112, Edith, 22 113, Mathew, 30 114, Mary, 25 the required output is [{"number":"111","name":"Sybil","age":"21" }, {"number":"112","name":"Edith","age":"22"}, {"number":"113","name":"Mathew","age":"30"}, "number":"114","name":"Mary","age":"25"] Sadly, I have not gone far because I cant seem to get the values out of each line. instead, this is what is displayed… Read More How to read from a .txt file into an array of objects

So this function is supposed to split the array into chunks the size of the second argument, e.g. [1, 2, 3, 4] with the second argument 2 would return [[1, 2], [3, 4]], if the number is 3 it would return [[1, 2, 3], [4]] and so on. My function seems to be behaving in… Read More Can't seem to identify the issue (splitting an array in chunks)

My goal is to find all the unique years in this array and than return it as a array. I have almost done it but cant figure out how I will return the split value. function findUniqueYears() { const arr = [‘1973-11-01’, ‘2001-01-01’, ‘1999-10-01’, ‘2007-10-01’, ‘2016-06-01’, ‘2005-08-01’, ‘1973-09-01’, ‘1979-12-01’, ‘2001-08-01’]; for (var i = 0;… Read More Find all unique values in array and than split it and return something else

I have an "access request" site where employees can enter a direct report or co-worker’s name(s) and select a number of applications for them to gain access to. It’s in PHP and the form/HTML looks like this. <input type="text" name="employee_names[]" id="employee_name" autocomplete="off" /> Then the PHP processes the submission like this. // process each request… Read More SQL Query Fails When Parsing Array

I have an array of objects like follows 0: {bill_no: ‘0000633’, test_code: ‘1’, analyzer_code: ‘2’} 1: {bill_no: ‘0000633’, test_code: ‘2’, analyzer_code: ‘2’} 2: {bill_no: ‘0000633’, test_code: ’28’, analyzer_code: ‘3’} 3: {bill_no: ‘0000633’, test_code: ‘254’, analyzer_code: ‘2’} I want to combine those objects to get the following result (join the objects based on same analyzer_code). 0:… Read More Combine objects in array in Javascript

i want to group my Data with the Name of type const inventory = [ { name: ‘asparagus’, type: ‘vegetables’, quantity: 5 }, { name: ‘bananas’, type: ‘fruit’, quantity: 0 }, { name: ‘goat’, type: ‘meat’, quantity: 23 }, { name: ‘cherries’, type: ‘fruit’, quantity: 5 }, { name: ‘fish’, type: ‘meat’, quantity: 22 }… Read More JavaScript groupBy is not a functio

so I have this array to help me with my input select options Input select: <select id="example-select"></select> And the array with the options const array_axis = [‘2015’, ‘2016’, ‘2017’, ‘2018’, ‘2019’, ‘2020’];//these are the options of my input select This is how I use that array as options for my input select: var select =… Read More remove non-selected keys from array of objects or create new array of objects with only selected value