How can I use a "or" contidition in array

Question

Like I want to write
var a = ["hi" ,"hello" ,"hey"] so how can I set it user enters hi or hello or hey then the output will be hi in the array

Answer 1

Charchit Dahiya you can use

if (array.includes(value)) {
// its inside array
} else {
// not inside
}

It is the same as:
if (value === "hi" || value === "hello" || value === "hey") {

}

Answer 2

Charchit Dahiya includes means (is it inside the array or not?)

let arr = [ 1,2,3 ]
arr.includes(1) // true
arr.includes(4) // false

Answer 3

Do you really have to use OR operator? you can use `indexOf` method to check whether a word was in the array though.

(Edit)
I thought you said "have to use OR operator"

var a = [ "hi", "hello", "greetings" ];
if(-1 != a.indexOf(prompt("Enter a word")))
{
alert("Found");
}
else
{
alert("Not found");
}

Answer 4

If you must use OR operator then it means you'd be using `if` statement where there are N (array items count) conditions evaluated, each chained by OR operator. Maybe something like

if(word === "hi" || word === "hello" || word === "hey")
// code here

Assuming <word> is user input ...

Answer 5

Please can you elaborate. It will be very sweet of you. Thanks in advance

Answer 6

Thanks

Answer 7

No I have to use OR operator any function or method for using it in arrays