Summarize array of objects and calculate average value for each unique object name

Question

I have an array like so:

var array = [
     {
       name: \"a\",
       value: 1 
     },
     {
       name: \"a\",
       value: 2 
     },
     {
                


        

Answer 1

You can do it with Alasql library with one line of code:

var newArray = alasql('SELECT name, AVG([value]) AS [value] FROM ? GROUP BY name',
                       [array]);

Here I put "value" in square brackets, because VALUE is a keyword in SQL.

Try this example at jsFiddle