JSFiddle - React, Tailwind, and code Playground

HTML

<span id="tot1"></span>, <span id="tot2"> und </span> und <span id="tot3"></span>

JavaScript

function getNumber() {
    random = Math.floor(Math.random() * students.length);
    students.splice(random,1);
    return random;
}

students = new Array("Paul", "Jan", "Fabian D.", "Fabian K.", "Lennard", 
							"Robin", "Angelique", "Joyce", "Sarah", "Ajlin",
							"Enes", "Leon", "Boran", "Joshua")    

getNumber();
tot1 = students[random];
getNumber();
tot2 = students[random];
getNumber();
tot3 = students[random];

document.getElementById('tot1').innerHTML = tot1;
document.getElementById('tot2').innerHTML = tot2;
document.getElementById('tot3').innerHTML = tot3;