JSFiddle - React, Tailwind, and code Playground

JavaScript

var start = $.now();
var div = $('<div/>').appendTo('BODY');
for( var i=1; i<=1000; i++ ){
    $('<a>A'+i+'</a><br/>').appendTo( div );
}
var end = $.now();
var elapse = end-start;
$('<span/>').text('경과시간 : '+elapse).appendTo('BODY');