You can refactor it as:
if( rowCheckStatuses.reduce(function(a, b){return a + b}, 0)
The initial accumulator isn't necessary (unless you expect the array to be empty sometimes), it could be:
if( rowCheckStatuses.reduce(function(a, b){return a + b})
This number acts as a boolean to determine whether or not there is at least one "1" in the array
It might be faster (and clearer) to use:
if( rowCheckStatuses.some(function(a){return a == 1}))
which will return true if there are any 1s in rowCheckStatuses and will return as soon as one is encountered. Another alternative is indexOf:
if( rowCheckStatuses.indexOf(1) != -1)
Lots of alternatives.
