// Get index of object with specific value in array const needle = 3; // needle const haystack = [{ id: 1 }, { id: 2 }, { id: 3 }]; // haystack const index = haystack.findIndex(item => item.id === needle);
arr = [{x: "a", y: 1}, {x: "something", y: 2}] arr.findIndex(obj => obj.x === "a" && obj.y === 1);
let ranks = [1, 5, 7, 8, 10, 7]; let index = ranks.findIndex(rank => rank === 7); console.log(index);