Question 66411 in Javascript Question posted in
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Initialise empty object array in TypeScript – Javascript

How to initialise empty object array in TypeScript?

Code:

let data: [{productID: number, vendorID: number}] = [];

Compilation error:

Type '[]' is not assignable to type '[{productID: number, vendorID: number}]'.
Tags:

2

Answers


  1. 0

    The format you have written is a tuple with one-element, try this instead:

    let data: Array<{ productID: number, vendorID: number }> = [];

    Alternatively:

    let data: { productID: number; vendorID: number }[] = [];
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  2. 0

    defince a type first Product then declare an array of that type:

    interface Product{
    productID: number;
    vendorID: number
}
let data:Product[]=[]
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