Test for array of string type in TypeScript

Question

How can I test if a variable is an array of string in TypeScript? Something like this:

function f(): string {
    var a: string[] = [\"A\", \"B\", \"C\"];

         


        

Answer 1

Try this:

if (value instanceof Array) {
alert('value is Array!');
} else {
alert('Not an array');
}