JavaScript return true if this word exist in the data

Question

in this case it return true because banana in the 0 index

const data= ["Banana", "Orange", "Apple", "Mango"];
    if (data.indexOf("Banana")===0)

but if banana in another index i need it returns true agian how?

const data= [ "Orange","Banana", "Apple", "Mango"];

Answer 1

A few methods for achieving this:

1. Using array.indexOf:

if (data.indexOf("Banana") !== -1)

2. Using array.includes:

if (data.includes("Banana"))

3. Using array.some:

if (data.some(d => d === "Banana"))

Answer 2

Use includes() function

if (data.includes("Banana"))