How can I check if an array contains a particular string in TypeScript

Question

With the help of code example can you tell me How can I check if an array contains a particular string in TypeScript?

Answer 1

You can use includes() method, which checks for the presence of an element and returns a boolean value.

Here's how you can use it:

const fruit: string[] = ['apple', 'banana', 'mango'];

const hasMango: boolean = fruit.includes('mango');

console.log(hasMango); // Output: true

const hasOrange: boolean = fruit.includes('orange');

console.log(hasOrange); // Output: false

In this example, fruit.includes('mango') returns true because 'mango' is an element in the fruits array, while fruits.includes('orange') returns false because 'orange' is not present.