Retrieving the initial data from a JSON array

After declaring an array called myclinicsID using var myclinicsID = new Array();, I added some data to it. When I use

alert(JSON.stringify(myclinicsID))
, the output is ["1","2","3","4"]

However, when I try to access this array in my function and check the console, it shows undefined. Is there an issue with my code like this?

getbarSeriesData(myclinicsID[0]['clinic_id'],data[i]['datemonths']);

I am trying to fetch the first element of myclinicsID which has a value of 1.

Answer №1

myclinicsID[0]['clinic_id']

The correct syntax is simply

myclinicsID[0]

You just need to access the array index directly. Using myclinicsID[0]['clinic_id'] is trying to fetch the clinic_id property of index "1", which will result in an undefined value.

Answer №2

What is the purpose of accessing myclinicsID[0]['clinic_id']? There doesn't seem to be a key named clinic_id in your array.

Since your array is single dimensional, you can directly retrieve the first element using myclinicsID[0].

DEMO

var myclinicsID = new Array();
myclinicsID[0] = 1;
myclinicsID[1] = 2;
myclinicsID[2] = 3;
myclinicsID[3] = 4;

function getbarSeriesData(clientID) {
  console.log(clientID);
  alert(clientID);
}

getbarSeriesData(myclinicsID[0]);

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