how to compare every element in array to a value

What I essantily want to do is compare all values in array to 123 in an if statment

let values = [1, 2, 3, 123]
if (123 == values.forEach(e => {return e})){

currently, I’m getting an error:

values.forEach(e => {return e})) is not a function

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>Solution :

If i understand that you want, try something like this

let values = [1, 2, 3, 123]

if (values.includes(123)) {
   *do some code*
}