How to retrieve values from an array of objects using Javascript

I am working with an array of objects that contains value pairs. I am trying to access a specific value using the following syntax:

myArray.code 
or
myArray[0].code

However, I am receiving an error message stating that myArray does not contain a property named code. When I check the array in the console, each object has two items in it - code and name. I would like to access code and name individually, but I am unsure how to achieve this.

(2) [{…}, {…}]
0: {code: "PROG2700", name: "Client Side Programming"}
1: {code: "PROG1400", name: "jk"}
length: 2

This is the initial array holding these objects:

 let [state_array_items, setState_array_items] = React.useState<Object[]>([]);

Answer №1

When your Object[] type is too generic, the Typescript compiler can get upset. To avoid this, specify that your type will always be { code: string; name: string }[] and TS will be satisfied.

type SomeObject = { code: string; name: string };

let [state_array_items, setState_array_items] = React.useState<SomeObject[]>([]);

Check out this TS playground example where the TS compiler complains with Object[] but accepts a more specific type:

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