Getting data from an array of objects

Question

I don't get how to get data from an array filled with objects in Javascript. Here is my code and error message :

//First I create the table
var dataset = [];

//Then I declare the object
var PersReunionObj = {};

//Now I throw some data into the object
PersReunionObj.fk_idPers = fk_idPers;
PersReunionObj.fk_idReunion = fk_idReunion;
PersReunionObj.isPresent = isPresent;

//I insert the object into a table    
dataset[0] = PersReunionObj;

Now I would like to get back those data from my table

console.log(dataset[0]);

Gives me :

{fk_idPers: 1, fk_idReunion: 1, isPresent: true}

So my table is OK. But then to get data, i tried something like

console.log(dataset[0].PersReunionObj.fk_idPers);

And it gives me an error :

Uncaught TypeError: Cannot read property 'fk_idPers' of undefined

How can i fix that ?

dataset[0] = PersReunionObj so dataset[0] is the PersReunionObj. Do dataset[0].fk_idPers — CertainPerformance
– CertainPerformance, Commented Jun 15, 2018 at 2:16
You might want to read about how to Access / process (nested) objects, arrays or JSON. — Sebastian Simon
– Sebastian Simon, Commented Jun 15, 2018 at 2:34

Nikhil Aggarwal · Accepted Answer · 2018-06-15 02:16:45Z

3

You simply need to call because dataset[0] is PersReunionObj

console.log(dataset[0].fk_idPers);

answered Jun 15, 2018 at 2:16

Nikhil Aggarwal

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2 Comments

Ishiru Over a year ago

Oh thanks, it's right it works.I feel a bit stupid right now :/

Nikhil Aggarwal Over a year ago

@Ishiru- No worries. When learning everyone ought to think and ask :)

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