I've an array of objects with the following format  [{'list': 'one', 'item': 1},   {'list': 'one', 'item': 2},  {'list': 'one', 'item': 3},  {'list': 'two', &...
I have [3, 16, 120]. when I do [3, 16, 120].map(mapper), I want to achieve, for example [4,5,  17,18,  121,122] i.e. each element map to n+1 and n+2. This is of course an example - what I want is to simply push multiple values from mapper function  D...
Looking at the map function in JavaScript, what am I doing wrong here?  // input: [{name: "Kevin"}, {name: "Bob"}]; // output: [{"Kevin" : 0}, {"Bob" : 1}]; var map = function(arr, property) {       var i = 0;...
What would be the equivalent of this without using a for loop?  Unsure what array method to use  function func(x){     var y = [];     for(i=0;i<x.length;i++){         y.push(x[i]);         y.push(x[i]);     }     return y; }  var input = [1,2,3,4...
This is my Code. Where I want to Pass the Values of kvArray to Second Array.  var kvArray = [{key: 1, value: 10},                 {key: 2, value: 20},                 {key: 3, value: 30}];  var reformattedArray = kvArray.map(obj => {     var paylo...
I have an object that contains an array and a couple of other values that I need to pass to the backend, but the backend needs to receive it as an array of objects. I fill in an array ($scope.student) by using checkboxes and the other values (docenti...
In my function I have the following variable:  const updatedData = data.map(elements => {   return {...elements, information: {programs: elements.programs.map(program => {     return {...program, pids: program.pids.map(pid => {       return...
Using javascript functional programming methods (like map/reduce), how would one aggregate/count the status field of arr1 and transform it to an array of key/value objects in arr2.   arr1 = [   {'task':'do something 1', 'status...
I have shopping Application in REACT js. Im displaying all products using .map() function, and also showing "ADD to CART" button  infront of each product. When ADD to Cart btn is clicked, it adds the clicked product ID in local storage then I...
I have this function which works perfectly in Chrome and Firefox, but returns a SyntaxError: Unexpected token '>' in Safari / Webkit.  What would the Safari-safe way of writing this function be?  data = _.each(data, obj =>  {      _.map...

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