JS, Loop over Json object list [duplicate]

Question

This is the results I am getting using console.log(res)

{d: Array(4)}
d: Array(4)
0: {__type: "Claim_Inbox+SubClaims", Claim_detail: 12, Claim_id: 123, …}
1: {__type: "Claim_Inbox+SubClaims", Claim_detail: 12, Claim_id: 124, …}
2: {__type: "Claim_Inbox+SubClaims", Claim_detail: 12, Claim_id: 125, …}
3: {__type: "Claim_Inbox+SubClaims", Claim_detail: 12, Claim_id: 126,…}
length: 4
__proto__: Array(0)
__proto__: Object

Using the following code I am getting the list of keys:values

var counter = 0;
$.each(res.d[counter ], function (key, value) {
   console.log(key + ": " + value);
   counter++;
});

how can I read a specific value like Claim_id ? I can use Switch() but maybe there is another way

Possible duplicate of From an array of objects, extract value of a property as array and Returning only certain properties from an array of objects in Javascript and Get array of property values from array of objects with jquery — adiga
– adiga, Commented Feb 6, 2019 at 14:45

Prince Hernandez · Accepted Answer · 2019-02-06 15:43:49Z

0

First of all, it is not an Object, it is an Array. Second, depending on what you want, you can use forEach to loop over the array and show or assign or do whatever you need with the id OR use map to construct a new array with the selected values.

const array = [
  { __type: "Claim_Inbox+SubClaims", Claim_detail: 12, Claim_id: 123 },
  { __type: "Claim_Inbox+SubClaims", Claim_detail: 12, Claim_id: 124 },
  { __type: "Claim_Inbox+SubClaims", Claim_detail: 12, Claim_id: 125 },
  { __type: "Claim_Inbox+SubClaims", Claim_detail: 12, Claim_id: 126 }
];

array.forEach(item => console.log(item['Claim_id']); );

console.log("--------------------");

// Generate a new array copy
const result = array.map(item => item['Claim_id']);

console.log(result)

edited Feb 6, 2019 at 15:43

user7528695

answered Feb 6, 2019 at 14:47

Prince Hernandez

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3 Comments

r g Over a year ago

Array is an Object in JS

Prince Hernandez Over a year ago

@fard yes, they are, but also are functions.... not for that you can loop over a function.... the base of javascript are objects, but they are not the same type of object ;)

r g Over a year ago

But you can't say that Arrat is not an object, like you do in your first sentence @PrinceHernandez

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