Performance guide

<a href="#">Hello world</a>
var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();

and next example

var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();

and next example

var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();
var x = new Array();