Ways to assign values to an array within an object

I'm attempting to transfer the contents of one array into an array within an object, but I keep encountering this error:

Type 'any[]' is not assignable to type '[]'.
  Target allows only 0 element(s) but source may have more.

Here's my object structure:

newForm: {formName: string, formId: string, formAttributes:[], formResponses:[]};

The array I want to copy is:

formAttributeValues=["firstname", "lastname"]

To copy it, I tried:

this.newForm.formAttributes= [...this.formAttributeValues];

Unfortunately, that didn't work. Any ideas on how to resolve this issue?

javascriptarraystypescript

Answer №1

The key to success in TypeScript is ensuring that you provide the correct data types. In this case, formAttributes should be of type string[]. Take a look at the code snippet below for a clearer explanation:

// Defining the type for the newForm object
let newForm: {formName: string, formId: string, formAttributes:string[], 
formResponses:[]};
// Initializing values for newForm
newForm = {formName: "", formId: "", formAttributes:[], formResponses:[]};
let formAttributeValues=["firstname", "lastname"]
newForm.formAttributes= [...formAttributeValues]

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