Can you explain why my code dosnt work please ?!

[WeissLuxford]

Pls, help me? whats wrong with my code, i have no idea understand why it doesn't work it passes (50% of test) and on other tests catches this error Value is not what was expected I dont, know what should i change

function combine(a = {}, b = {}, c = {}) {
  const arrObj = [a, b, c]
  const newObj = {}
  arrObj.forEach((value, index, arr) => {
    for (const [keys, values] of Object.entries(value)) {
      if( !newObj.hasOwnProperty(keys)){
        newObj[keys] = values
      } else {
        newObj[keys] = newObj[keys] + values
      }
    }
  })
  console.log(arrObj)
  console.log(newObj)
  return newObj
}

in this kata Combine Objects

[flaviorcb]

The problem is : the input can have more than 3 objects.
"Your task is to write a function that takes two or more objects"

[Daringu]

the function has to be able to accept more than 2 two arguments(2,3,4,5,6,7...).How can you do it?Use "rest" in your arguments to collect them into one array and then you will be able to iterate in the array.

[Daringu]

also remember about reduce method.It's very useful method

[WeissLuxford]

Thanks, for your advice, ill remember, But I still need to fully understand how reduce works.