Get the specific value from array list based on the key value in Javascript [duplicate]

I have an array of below type,

[{
  "type":"G",
  "amount":"123",
  "penamount:"110"
},{
  "type":"N",
  "amount":"123",
  "penamount":"123"
},{
  "type":"B",
  "amount":"1000",
  "penamount":"900"
}]

Now in case if I need the amount for type “N” how can I easy achieve this in javascript.Using map is one option.But how can that be achieved

Any help appreciated.