![]() ![]() I realized that this was kind of like dieting. Map methods run a function on each element in an initial array before storing it in a final array.Īnd reduce methods combine elements from an initial array into a final value or array of values. And, it will create more chances for bugs, since you will need to create more variables to track individual values.įilter methods take all the elements in an initial array, and only allow certain elements into a final array. Other developers will need to read each loop thoroughly to understand the purpose. But, if you do not use methods like filter(), map() and reduce(), then your code will become harder to read. Of course, you can always use a for loop to iterate through an array and take a specific action on each value. Wow, that is a lot in one sentence, so let’s take a step back here. ![]() The reduce method in JavaScript gives you a simple way to take an array of values and combine them into one value, or sum the array based on multiple category. If you have ever read a nutrition label, then you can understand the reduce() method in JavaScript.
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