JSFiddle - React, Tailwind, and code Playground

HTML

<h1>Javascript Example</h1>
<div id="output"></div>

JavaScript

(function(){
    /* all of our stuff is hidden inside 
       this anonymous function ... 
       a common javascript idiom to make
       sure that variable names don't collide
       between different .js files */

var output = $('#output'); /* the output div */
var content = '';          /* text inside output */

function printline(something){
    /* add this text to content,
       and redisplay the output div */
    content = content + something + '<br>'
    output.html(content);
}

/* Let's print a list of numbers
   in a loop. */
for (var i=0; i<10; i++){
    printline(i);
}

var numbers = [10, 11, 12];
printline(numbers);

})();