Edit in JSFiddle

var stream1 = new Random(1234);
var a1 = stream1.random();
var a2 = stream1.random();

var stream2 = new Random( (new Date()).getTime() );
var b1 = stream2.random();
var b2 = stream2.random();


//RENDER
$("#numbers").append('<li>' + a1 + '</li>');
$("#numbers").append('<li>' + a2 + '</li>');

$("#dyn_numbers").append('<li>' + b1 + '</li>');
$("#dyn_numbers").append('<li>' + b2 + '</li>');

<h2>Numbers (Static Seed - always the same)</h2>
<ul id="numbers">
</ul>

<h2>Numbers (Dynamic Seed)</h2>
<ul id="dyn_numbers">
</ul>