//indexOf getting index of array element, returns -1 if not found
var colors=["red","green","blue"];
var pos=colors.indexOf("blue");//2
//indexOf getting index of sub string, returns -1 if not found
var str = "We got a poop cleanup on isle 4.";
var strPos = str.indexOf("poop");//9a = [
{prop1:"abc",prop2:"qwe"},
{prop1:"bnmb",prop2:"yutu"},
{prop1:"zxvz",prop2:"qwrq"}
];
index = a.findIndex(x => x.prop2 ==="yutu");
console.log(index);let monTableau = ['un', 'deux','trois', 'quatre'] ;
console.log(monTableau.indexOf('trois')) ;
const fruits = ["apple", "banana", "cantaloupe", "blueberries", "grapefruit"];
const index = fruits.findIndex(fruit => fruit === "blueberries");
console.log(index); // 3
console.log(fruits[index]); // blueberries
function quickCheck(arr, elem) {
return arr.indexOf(elem) != -1;
}
console.log(quickCheck(["squash", "onions", "shallots"], "mushrooms"));