While using map filter and reduce is great for readability. Using a for loop is the fastest of all. So if your looking to optimize as much as possible i would go with a for loop.
map
filter
reduce
In Chrome 71 level2Sum is still 88% slower than a C-style for loop.
jsperf.com/chained-maps-vs-for-loop
In Edge 42 the level3Sum is just as slow as the original chained maps.
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While using
mapfilterandreduceis great for readability. Using a for loop is the fastest of all. So if your looking to optimize as much as possible i would go with a for loop.In Chrome 71 level2Sum is still 88% slower than a C-style for loop.
jsperf.com/chained-maps-vs-for-loop
In Edge 42 the level3Sum is just as slow as the original chained maps.