How to get JSON value by using iteration in Node.js?

Question

I have a project that I'm working on using Node.js and I'm having trouble when I try to iterate through object properties. I'm new to this kind of iteration. I'm used to write data.value to access a value, but I can't access a value like that, I need to access the value by using iteration in JavaScript.

I have this JSON data

var data = {
  "internal": {
      "services": {
         "core": "OK",
         "comments": "NOK",
         "id": "OK"
     }
  }
}

I need to get the OK or NOK values using JavaScript iteration.

I tried this

for (var key of Object.values(data)) {
     if (key === 'NOK') {
         axios.post(slackWebhookURL, {
             text: `Problems found in ${key}`
         })
     } else axios.post(slackWebhookURL, {
         text: 'Everything is working properly.'
     })
}

I've tried with Object.keys() , Object.entries() , Object.getOwnPropertyName() but none of them worked, none of them returned OK or NOK .

Any kind of help is appreciated.

Answer 1

Use the function entries as follow:

for (var [key, value] of Object.entries(data.internal.services)) {...}

 var data = { "internal": { "services": { "core": "OK", "comments": "NOK", "id": "OK" } } } for (var [key, value] of Object.entries(data.internal.services)) { if (value === 'NOK') { console.log(`Problems found in '${key}'`); } else { console.log(`Everything is working properly in '${key}'`); } } 

Answer 2

You need to access the correct property of your object literal. Also, simply use some()

 var data = { "internal": { "services": { "core": "OK", "comments": "NOK", "id": "OK" } } }; if (Object.values(data.internal.services).some(e => e === 'NOK')) { axios.post(slackWebhookURL, { text: `Problems found in ${key}` }); } else { axios.post(slackWebhookURL, { text: 'Everything is working properly.' }); } 

Answer 3

You use the 'dot' syntax to access the inner properties

console.log('core: ' + data.internal.services.core);
console.log('comments: ' + data.internal.services.comments);
console.log('id: ' + data.internal.services.id);

To iterate you need to loop through the object that contains the properties whose values you want to observe, in this case data.internal.services .

 var data = { "internal": { "services": { "core": "OK", "comments": "NOK", "id": "OK" } } } for (var propName in data.internal.services) { if (data.internal.services[propName] === 'NOK') { console.log(propName + ': NOK') } else { console.log(propName + ': OK') } }