JSFiddle - React, Tailwind, and code Playground
JavaScript
var line = "John Tom Mary | 5";
var s = line.split(" | ");//3
var n = s[0].split(" ");//John Sara Tom Susan
/*var r = ["a", "b", "c"];
r.splice(1,1);
console.log(r)*/
while(n.length > 1) {
n.splice(s[1]%n.length-1, 1);
}
console.log(n[0]);