JSON Parse to get objects within array

Question

I've never done anything like this before and are struggling to get this working, I have tried different code samples online but to no joy.

I want to return the displayName from the 5 objects in the below array.

I'm restricted to only use ES5.

I tried the below but was only getting the first object when printing rather than all 5.

for (var i = 0; i < parsed.value.length; i++) {
    var counter = parsed.value[i].displayName;
}

Any tips/points? As you can tell I'm new to this!

Thanks.

Answer 1

You can also have a look at the below simple examples.

These examples do not include all the fields from your input data but relevant.

I think, it will be helpful.

var parsed = {
    value:  [
        {fullName:  "Ken Thompson",  displayName:  "Ken",  age:  55}, 
        {fullName:  "Rob Pike",  displayName:  "Rob",  age:  50}, 
        {fullName:  "Robert Griesemer",  displayName:  "RobertGoog",  age:  56}, 
        {fullName:  "Ander Hezlsberg",  displayName:  "AndersMicro",  age:  58}, 
        {fullName:  "Ryan Dahl",  displayName:  "Ryan08",  age:  40}
     ]
};

// 1st way to get as an array of objects
var dispNames = parsed.value.map(function(o) { return {displayName: o.displayName}});
console.log(dispNames);

/*
[ { displayName: 'Ken' },
  { displayName: 'Rob' },
  { displayName: 'RobertGoog' },
  { displayName: 'AndersMicro' },
  { displayName: 'Ryan08' } ]
*/

// 2nd way to get as a list of displayNames
var dispNames2 = parsed.value.map(function(o) { return o.displayName});
console.log(dispNames2);
/*
    [ 'Ken', 'Rob', 'RobertGoog', 'AndersMicro', 'Ryan08' ]
*/

// 3rd way to get as a string with displayNames separated with comma(,) 
console. log(dispNames2.join(","));
/*
    Ken,Rob,RobertGoog,AndersMicro,Ryan08
*/

If you want to get result as the above 3rd way shows, here is most simple way to get that without using join() method defined on array objects.

console.log("" + dispNames2);
// Ken,Rob,RobertGoog,AndersMicro,Ryan08