Postman accessing child objects in Json in a Test - json

Question

I am trying to access the name object in this Json to put in a local variable in a Postman Test.
Json
{
"Line": [
{
"Id": "1",
"LineNum": 1,
"Description": "Custom Design",
"Amount": 75.00,
"DetailType": "SalesItemLineDetail",
"SalesItemLineDetail": {
"ItemRef": {
"value": "4",
"name": "Design"
},
"UnitPrice": 75,
"Qty": 1,
"ItemAccountRef": {
"value": "82",
"name": "Design income"
},
"TaxCodeRef": {
"value": "NON"
}
}
}
]
}
I am using this code to loop through the Line Array but if I try and go deeper than 1 level Itemref it returns undefined
let ProductArray=[];
for (let i=0; i < Line.length; i++) {
//
ProductArray.push({
"value":Line[i].SalesItemLineDetail.ItemRef.name
})
}
I have also tried
'"value":Line[i].SalesItemLineDetail["ItemRef"].name
"value":Line[i].SalesItemLineDetail["ItemRef"]["name"]
all return ItemRef undefined
What is the correct syntax or code?
TIA

Answer 1

There are just some small pieces missing with your code. I re-create a test and mocked the same JSON data. I just add the missing pieces to your code and the test was Successful.
GET Request:
//Response body JSON
{
"Line": [
{
"Id": "1",
"LineNum": 1,
"Description": "Custom Design",
"Amount": 75,
"DetailType": "SalesItemLineDetail",
"SalesItemLineDetail": {
"ItemRef": {
"value": "4",
"name": "Design"
},
"UnitPrice": 75,
"Qty": 1,
"ItemAccountRef": {
"value": "82",
"name": "Design income"
},
"TaxCodeRef": {
"value": "NON"
}
}
}
]
}
// Tests
// Check response body
const res = pm.response.json().Line;
let ProductArray=[];
for (let i=0; i < res.length; i++) {
const res = pm.response.json().Line;
ProductArray.push({
"value":res[i].SalesItemLineDetail.ItemRef.name
})
// Lets see console.log result
console.log('Check For:', res[i].SalesItemLineDetail.ItemRef.name)
// Set Result to environment variables
pm.environment.set("variable_key", res[i].SalesItemLineDetail.ItemRef.name);
}
console.log output: Design which is also added to environment variables.