CODEWITHSUNDEEP
javascript
b z
b z

Reputation: 23

find a specific json by id

I have several json vars with the name of "jsonObject_" + id, for example:

var jsonObject_123 = ...;

var jsonObject_456 = ...;

etc. All those jsons have the same format, same keys, but different values.

I also have a method that receives the id as argument.

I need to change the correct jsonObject address according to the id. That is, if the argument is 123, I need to change jsonObject_123.address

How can I get the reference to jsonObject_123 based on the id argument?

Upvotes: 2

Views: 73

Answers (1)

Darin Dimitrov
Darin Dimitrov

Reputation: 1038880

First a small remark about the terminology used here. What you are calling JSON vars has nothing to do with JSON. Those are plain javascript variables. JSON is a serialization format.

Now depending on the scope where those variables are defined you could use the following:

var id = '123';
window['jsonObject_' + id].address = 'some address';

In this example I have assumed that those variables are declared in the global scope => you could access them through the window object. You will have to adapt this code depending on your specific case.

But a better approach would be to group all those variables into a containing object:

var jsonObject = {};
jsonObject['123'] = { address: 'address 1' };
jsonObject['456'] = { address: 'address 2' };
...

and then when you want to access it:

jsonObject['123'].address = 'some new address';

Upvotes: 4

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