indexOf

Finds first index of a value. 🏃 [:vhs:] 📦 🌔 📒

Alternatives: indexOf, lastIndexOf.

iterable.indexOf(x, v, [i]);
// x: an iterable
// v: search value
// i: start index

const iterable = require('extra-iterable');

var x = [1, 2, 3, 2, 5];
iterable.indexOf(x, 2);
// 1        ^

var x = [1, 2, 3, 2, 5];
iterable.indexOf(x, 2, 2);
// 3              ^

references

• List-Extra.elemIndex: elm
• Array.prototype.indexOf: MDN web docs