CODE EXAMPLE FOR JAVASCRIPT

Index of an element

/*To search for the index of a substring or string within an array, 
use .indexOf() 
If you search for something that isn't there, the function will return -1*/

let mechs = ["madcat", "blood asp", "atlas"];
console.log(mechs.indexOf("madcat"); //returns 0
console.log(mechs.indexOf("atlas"); //returns 2

let clan = "nova cat";
console.log(clan.indexOf("a")); /*returns 3 (Only the first instance of the
character is used.*/
console.log(clan.indexOf("cat")); /*returns 5 (Finds the index of the beginning
character)*/
console.log(clan.indexOf("s")); //returns -1