JavaScript Exercises

Hello I want to transform array to object input = [1,2,3] expected output = {1:1,2:2,3:3} I tried … Read more Array To Object Reduce

Suppose I have an array: const ar = [1,2,3,4]; And I apply reduce function to it and inside that f… Read more What Are The Consequences Of Mutating The Array While Applying Array.reduce To It

I want to reduce my array of objects by comparing previous and current object from the array, if th… Read more Merge Objects With The Same Id But Sum Values Of The Objects

I've been following this post but I cannot get my array to add up all numbers in my array. I us… Read more Add Up Numbers In Array

I'm trying to solve this little problem, where I need to use reduce to create an object with th… Read more Javascript Using Reduce To Create Object With Counts, From Array

I am trying to sum the unit value by date, and create a new array where there are no duplicate date… Read more Es6 Sum By Object Property In An Array

I have a json response and I want to simplify this json data with recursion and reduce. I write a f… Read more Javascript Recursion Normalize Json Data

I have 3 drop-down-lists that load attributes related to a page. These attributes are: instruments,… Read more Typeerror: $scope.array.reduce Is Not A Function