measure performance indexOf with and without 'fromIndex'

search_id.js

'use strict'
let people = [];
let index = 0
let temp = 0
let ids = [];
for(let i = 0; i<10000; i++){
    people.push({id:i, name : 'rnd'});
}
for(let i = 0; i<5000; i++){
    ids.push(i+1);
}
console.time("quick")
people.forEach(function(item) {
    if ((temp = ids.indexOf(item.id, index)) !== -1) {
        index = temp;
        //console.log(item.name);
    }
});
console.timeEnd("quick")

console.time("slow")
people.forEach(function(item) {
    if (ids.indexOf(item.id) !== -1) {
        //console.log(item.name);
    }
});
console.timeEnd("slow")