JSFiddle - React, Tailwind, and code Playground

HTML

<button id="start">Start Game</button>

JavaScript

function numberToName(computer_throw){
					if(computer_throw === 0){
						computer_throw = "Rock";
					}

					else if(computer_throw === 1){
						computer_throw = "Paper";
					}

					else if(computer_throw === 2){
						computer_throw = "Scissors";
					}

					else if(computer_throw === 3){
						computer_throw = "Lizard";
					}

					else{
						computer_throw = "Spock";
					}

					return computer_throw;
				}

				function nameToNumber(user_throw){
					if(user_throw == "Rock"){
						user_throw = 0;
					}

					else if(user_throw == "Paper"){
						user_throw = 1;
					}

					else if(user_throw == "Scissors"){
						user_throw = 2;
					}

					else if(user_throw == "Lizard"){
						user_throw = 3;
					}

					else if(user_throw == "Spock"){
						user_throw = 4;
					}

					else{
						console.log("Please pick a throw.");
					}

					return user_throw;
				}

				function game(thrw){
				    var computer_throw = Math.floor((Math.random() * 5));
				    thrw = nameToNumber(thrw);
				    var difference = Math.abs((computer_throw - thrw) % 5);

				    $("#result").append("<p>Player <strong>" +numberToName(thrw) +"</strong></p>");
				    $("#result").append("<p>Comp <strong>" +numberToName(computer_throw) +"</strong></p>");

				    console.log(difference);
				}

				$("#start").on("click", function(){
					$("#result").children().remove();
					var user_throw = $("#throw").val();
					//game("Rock");
					//game("Paper");
					//game("Scissors");
					//game("Lizard");
					//game("Spock");
				})