JSFiddle - React, Tailwind, and code Playground

HTML

<input type="button" value="press me" onclick="saberTooth()">
<pre><p id="saber"></p></pre>

JavaScript

function saberTooth(){
	z=parseInt(prompt()),y="ABCDEFGHIJKLMNOPQRSTUVWXYZ".split(""),w="",v=0;
	y[9]="Javascript";
	for(v=0;v<z;v++)w+="\n0";
	w=w.split("0");v--;
	for(i=0;i<26;i++){
		for(j=0;j<z;j++)w[j]+=j-v?(i==9?"          ":" "):y[i];
		Math.floor(i/(z-1))%2?v++:v--;		
	}
	if(z==1)w=y;
	document.getElementById("saber").innerHTML = w.join("") ;
}