How to check if array element exists or not in javascript?

Question

I am working with Titanium, my code looks like this:

var currentData = new Array();

if(currentData[index]!==\"\"||currentData[index]!==null||currentData[ind         


        

Answer 1

var myArray = ["Banana", "Orange", "Apple", "Mango"];

if (myArray.indexOf(searchTerm) === -1) {
  console.log("element doesn't exist");
}
else {
  console.log("element found");
}