Find which element in an array contains a string [duplicate]

Question

If I have an array like this

["one","two","three","hello","world","bar"]

How would I find which object in the array is "Hello"?

Answer 1

const arr = ["one","two","three","hello","world","bar"];

const index = arr.indexOf("hello");
console.log(index)

Answer 2

You could use findIndex() or indexOf(). Both return the index of the item if it is in the array or -1 if it is not.

const array = ["one","two","three","hello","world","bar"]
const result = array.findIndex(item => item === "hello");
if(result === -1) console.log("Not found");
else console.log(`"hello" found at index ${result} in array: array[${result}] = ${array[result]}`);

const array = ["one", "two", "three", "hello", "world", "bar"]
const result = array.indexOf("hello");
if (result === -1) console.log("Not found");
else console.log(`"hello" found at index ${result} in array: array[${result}] = ${array[result]}`);