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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JS Bin</title>
</head>
<body>
    <div id='result'></div>
</body>
</html>
 
var items = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18];
var size = 6, grouped = [];
for ( var i = 0 ; i < items.length ; i+= size ) {
    grouped.push(items.slice(i,i+size));
}
document.getElementById('result').innerHTML = JSON.stringify(grouped);
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jaggedsoftpro
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