Group and count values in an array

Question

I have an array with objects, like the following.

b = {
  \"issues\": [{
    \"fields\": {
      \"status\": {
        \"id\": \"200\",
        \"name\": \"B         


        

Answer 1

You can write like this. It is dynamic.

var a = {}; 
for(var key in b["issues"]){ 
    if(!a.hasOwnProperty(b["issues"][key].fields.status.name)){
     a[b["issues"][key].fields.status.name] = 1;
    }else{
     a[b["issues"][key].fields.status.name] = a[b["issues"][key].fields.status.name]+1;
    }
}
var c = [];
for(var key1 in a){
   c.push({
   name  : key1,
   count : a[key1]
   });
}