Today has been spent trying to learn about arrays...

I wrote the script below to try to understand how the Array function and the push function to assemble different arrays. 

<script>

  var array1 = [1,2,3,4,5];

  var alphaarray = ["a","b","c","d","e"];

  var arrayarray = [];

  var pusharray = [];

  var anotherpusharray = [];  

    

    

    for (i = 0; i < array1.length; ++i)

            {   

                arrayarray[i] =Array(array1[i], alphaarray[i]);

                pusharray.push(array1[i],alphaarray[i]);

                

            }

    

    anotherpusharray.push(array1, alphaarray)

  

     document.write("<br>");     

     document.write("<br>");

     document.write(arrayarray);

     document.write("<br>");     

     document.write("<br>");

     document.write(arrayarray[0]);

     // output put is 1,a

     

     

     document.write("<br>");     

     document.write("<br>");

     document.write(pusharray);

     

     document.write("<br>");     

     document.write("<br>");

     document.write(pusharray[0]);

     

  

  // output looks the same for both arrayarray and pusharray even though the information is differently organised.  

  // the different organisation is demonstrated by what happens when you write the first element from each array. The first element from 

  // arrayarray is [1,a]

  

   

  

      document.write("<br>");     

     document.write("<br>");

     document.write(anotherpusharray);

     document.write("<br>");     

     document.write("<br>");

     document.write(anotherpusharray[0]);

     document.write("<br>");     

     document.write("<br>");

     document.write(anotherpusharray[0][0]);

      

 // 

  

    

    </script>