Linear search function (to find index of number in sorted array) - Javascript

function search(number) {
var sorted = [1,2,3,4,5]
var found = 0
for(var i = 0; i < sorted.length; i++) {
if(number == sorted[i]) {
console.log("index is " + i)
found = 1
}
}
if (found == 0) {
console.log("not found")
}
}
search(2)