How to know if the MODEL value is a file?

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I need to know if the value that is in a screen MODEL property is a file. How could I do this in javascript?

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javascript vue.js

  • Please explain better because your question is very vague.

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You can check this using the instanceof!

let bn_escudi_time = new File(['arr1', 'arr2', 'arr3'], "file.txt");
let string = 'string';

console.log(bn_escudi_time instanceof File); // -> true
console.log(string instanceof File); // -> false

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