JSFiddle - React, Tailwind, and code Playground

JavaScript

var arr1 = [ "D", "CPU_Purchased_ghz", "2015-03-19 00:00:00", 10.00, "2015-03-20 00:00:00", 10.00 ];

log('Original array');
log(arr1);

var arr2 = [];

for(var i=0, l=arr1.length; i<l; i++){
    arr2.push([ arr1[i], arr1[++i] ]);
}

log('New array');
log(arr2);




function log(c){
    if(typeof c != "string"){
        c = '<pre>'+JSON.stringify(c,null,4)+'</pre>';
    }
    else{
        c = '<h1>'+c+'</h1>';
    }
    document.body.innerHTML += c;
}