javascript: Object Array looping

Question

I need to loop an javascript object array

This is my object response:

{
 "kind": "calendar#events",
 "etag": "\"p3288namrojte20g\"",
 "summary": "pedicura",
 "updated": "2019-05-01T14:25:51.642Z",
 "timeZone": "America/Argentina/Cordoba",
 "accessRole": "owner",
 "defaultReminders": [
  {
   "method": "popup",
   "minutes": 30
  }
 ],
 "nextSyncToken": "CJCLqtvE-uECEJCLqtvE-uECGAU=",
 "items": [
  {
   "kind": "calendar#event",
   "etag": "\"3113441344690000\"",
   "id": "hb6me2h********1dun5rs10",
   "status": "confirmed",
   "htmlLink": "https://www.google.com/calendar/event?eid=aGI2bWUyaGFvaGtqbWI4bXYxZHVuNXJzMTAgZTYyMXJtMD********Zw",
   "created": "2019-05-01T14:12:08.000Z",
   "updated": "2019-05-01T14:24:32.345Z",
   "summary": "Prueba de: Pedicura en sala 2-x",
   "description": "x-prueba de añadir masajes en sala 2 y notificar al manicura y a otra persona, fernanda?",
   "creator": {
    "email": "[email protected]"
   },
   "organizer": {
    "email": "[email protected]",
    "displayName": "pedicura",
    "self": true
   },
   "start": {
    "dateTime": "2019-05-08T21:00:00-03:00",
    "timeZone": "America/Argentina/Buenos_Aires"
   },
   "end": {
    "dateTime": "2019-05-08T23:00:00-03:00",
    "timeZone": "America/Argentina/Buenos_Aires"
   },
   "iCalUID": "[email protected]",
   "sequence": 2,
   "attendees": [
    {
     "email": "[email protected]",
     "responseStatus": "needsAction"
    },
    {
     "email": "[email protected]",
     "responseStatus": "needsAction"
    }
   ],
   "reminders": {
    "useDefault": true
   }
  },
  {
   "kind": "calendar#event",
   "etag": "\"3113441378884000\"",
   "id": "tv**0nbhkt**47la0k",
   "status": "confirmed",
   "htmlLink": "https://www.google.com/calendar/event?eid=dHZmOTQwbmJoa3Q3cnJvYjJsMW00N2xhMGsgZTYyMXJtM*****",
   "created": "2019-05-01T14:18:53.000Z",
   "updated": "2019-05-01T14:24:49.442Z",
   "summary": "Prueba de: Pedicura en sala 2-x",
   "description": "x-prueba de añadir masajes en sala 2 y notificar al manicura y a otra persona, fernanda?",
   "creator": {
    "email": "[email protected]"
   },
   "organizer": {
    "email": "[email protected]",
    "displayName": "pedicura",
    "self": true
   },
   "start": {
    "dateTime": "2019-05-07T21:00:00-03:00",
    "timeZone": "America/Argentina/Buenos_Aires"
   },
   "end": {
    "dateTime": "2019-05-07T23:00:00-03:00",
    "timeZone": "America/Argentina/Buenos_Aires"
   },
   "iCalUID": "[email protected]",
   "sequence": 2,
   "attendees": [
    {
     "email": "[email protected]",
     "responseStatus": "needsAction"
    },
    {
     "email": "[email protected]",
     "responseStatus": "needsAction"
    }
   ],
   "reminders": {
    "useDefault": true
   }
  },
  {
   "kind": "calendar#event",
   "etag": "\"3113441503284000\"",
   "id": "tqhje1kd*****0",
   "status": "confirmed",
   "htmlLink": "https://www.google.com/calendar/event?eid=dHFoamUxa2Q0MG51M2Q3cGd2b2xlOGRqODAgZTYyMX*****",
   "created": "2019-05-01T14:25:51.000Z",
   "updated": "2019-05-01T14:25:51.642Z",
   "summary": "Prueba de",
   "description": "x-prueba de añadir masajes en sala 2 y notificar al manicura y a otra persona, fernanda?",
   "creator": {
    "email": "[email protected]"
   },
   "organizer": {
    "email": "[email protected]",
    "displayName": "prueba",
    "self": true
   },
   "start": {
    "dateTime": "2019-04-26T21:00:00-03:00",
    "timeZone": "America/Argentina/Buenos_Aires"
   },
   "end": {
    "dateTime": "2019-04-26T23:00:00-03:00",
    "timeZone": "America/Argentina/Buenos_Aires"
   },
   "iCalUID": "tqh*****[email protected]",
   "sequence": 0,
   "attendees": [
    {
     "email": "[email protected]",
     "responseStatus": "needsAction"
    },
    {
     "email": "[email protected]",
     "responseStatus": "needsAction"
    }
   ],
   "reminders": {
    "useDefault": true
   }
  }
 ]
}

and i want to do something like this:

var dataStr = JSON.stringify(response);
var dataPrs = JSON.parse(dataStr);
var dataList = JSON.stringify(dataPrs.items);
dataStr = JSON.stringify(dataList);
dataPrs = JSON.parse(dataStr);
dataListPrs.forEach( console.log(dataPrs.htmlLink) );

this current code shows this error SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data on this line dataPrs = JSON.parse(dataStr); — Alejandro Levit
– Alejandro Levit, Commented May 1, 2019 at 15:15

Ashish · Accepted Answer · 2019-05-01 15:18:17Z

You dont need to do JSON.stringify and JSON.parse everytime.

You need JSON.stringify only if you want to convert Javascript object into JSON string

and JSON.parse only if you want to convert JSON string to Javascript object and want to access its values with the key.

So, All you need is:

const data = {
 "kind": "calendar#events",
 "etag": "\"p3288namrojte20g\"",
 "summary": "pedicura",
 "updated": "2019-05-01T14:25:51.642Z",
 "timeZone": "America/Argentina/Cordoba",
 "accessRole": "owner",
 "defaultReminders": [
  {
   "method": "popup",
   "minutes": 30
  }
 ],
 "nextSyncToken": "CJCLqtvE-uECEJCLqtvE-uECGAU=",
 "items": [
  {
   "kind": "calendar#event",
   "etag": "\"3113441344690000\"",
   "id": "hb6me2h********1dun5rs10",
   "status": "confirmed",
   "htmlLink": "https://www.google.com/calendar/event?eid=aGI2bWUyaGFvaGtqbWI4bXYxZHVuNXJzMTAgZTYyMXJtMD********Zw",
   "created": "2019-05-01T14:12:08.000Z",
   "updated": "2019-05-01T14:24:32.345Z",
   "summary": "Prueba de: Pedicura en sala 2-x",
   "description": "x-prueba de añadir masajes en sala 2 y notificar al manicura y a otra persona, fernanda?",
   "creator": {
    "email": "[email protected]"
   },
   "organizer": {
    "email": "[email protected]",
    "displayName": "pedicura",
    "self": true
   },
   "start": {
    "dateTime": "2019-05-08T21:00:00-03:00",
    "timeZone": "America/Argentina/Buenos_Aires"
   },
   "end": {
    "dateTime": "2019-05-08T23:00:00-03:00",
    "timeZone": "America/Argentina/Buenos_Aires"
   },
   "iCalUID": "[email protected]",
   "sequence": 2,
   "attendees": [
    {
     "email": "[email protected]",
     "responseStatus": "needsAction"
    },
    {
     "email": "[email protected]",
     "responseStatus": "needsAction"
    }
   ],
   "reminders": {
    "useDefault": true
   }
  },
  {
   "kind": "calendar#event",
   "etag": "\"3113441378884000\"",
   "id": "tv**0nbhkt**47la0k",
   "status": "confirmed",
   "htmlLink": "https://www.google.com/calendar/event?eid=dHZmOTQwbmJoa3Q3cnJvYjJsMW00N2xhMGsgZTYyMXJtM*****",
   "created": "2019-05-01T14:18:53.000Z",
   "updated": "2019-05-01T14:24:49.442Z",
   "summary": "Prueba de: Pedicura en sala 2-x",
   "description": "x-prueba de añadir masajes en sala 2 y notificar al manicura y a otra persona, fernanda?",
   "creator": {
    "email": "[email protected]"
   },
   "organizer": {
    "email": "[email protected]",
    "displayName": "pedicura",
    "self": true
   },
   "start": {
    "dateTime": "2019-05-07T21:00:00-03:00",
    "timeZone": "America/Argentina/Buenos_Aires"
   },
   "end": {
    "dateTime": "2019-05-07T23:00:00-03:00",
    "timeZone": "America/Argentina/Buenos_Aires"
   },
   "iCalUID": "[email protected]",
   "sequence": 2,
   "attendees": [
    {
     "email": "[email protected]",
     "responseStatus": "needsAction"
    },
    {
     "email": "[email protected]",
     "responseStatus": "needsAction"
    }
   ],
   "reminders": {
    "useDefault": true
   }
  },
  {
   "kind": "calendar#event",
   "etag": "\"3113441503284000\"",
   "id": "tqhje1kd*****0",
   "status": "confirmed",
   "htmlLink": "https://www.google.com/calendar/event?eid=dHFoamUxa2Q0MG51M2Q3cGd2b2xlOGRqODAgZTYyMX*****",
   "created": "2019-05-01T14:25:51.000Z",
   "updated": "2019-05-01T14:25:51.642Z",
   "summary": "Prueba de",
   "description": "x-prueba de añadir masajes en sala 2 y notificar al manicura y a otra persona, fernanda?",
   "creator": {
    "email": "[email protected]"
   },
   "organizer": {
    "email": "[email protected]",
    "displayName": "prueba",
    "self": true
   },
   "start": {
    "dateTime": "2019-04-26T21:00:00-03:00",
    "timeZone": "America/Argentina/Buenos_Aires"
   },
   "end": {
    "dateTime": "2019-04-26T23:00:00-03:00",
    "timeZone": "America/Argentina/Buenos_Aires"
   },
   "iCalUID": "tqh*****[email protected]",
   "sequence": 0,
   "attendees": [
    {
     "email": "[email protected]",
     "responseStatus": "needsAction"
    },
    {
     "email": "[email protected]",
     "responseStatus": "needsAction"
    }
   ],
   "reminders": {
    "useDefault": true
   }
  }
 ]
}

const items = data.items

items.forEach(x => console.log(x.htmlLink))

i still can't, this is what i've tryed: ``` console.log("Response", response); var dataStr = JSON.stringify(response); var dataPrs = JSON.parse(dataStr); console.log("pse", dataPrs); var body = dataPrs.body; console.log("body", body); console.log("items", body.items); body.items.forEach(x => console.log(x.htmlLink)); ``` but body.items is undefined
Why are you doing this: var dataStr = JSON.stringify(response); var dataPrs = JSON.parse(dataStr); stringify and parse again and again.

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