To create a new array, use the following syntax:
arrayname = new Array()
Or you can use the shorthand form, as follows:
arrayname = 
In PHP, you could add a new element to an array by simply assigning it without specifying the element offset, like this:
$arrayname = "Element 1"; $arrayname = "Element 2";
push method to achieve the same thing,
arrayname.push("Element 1") arrayname.push("Element 2")
This allows you to keep adding items to an array without
having to keep track of the number of items. When you need to know
how many elements are in an array, you can use the
length property, like this:
Alternatively, if you wish to keep track of the element locations yourself and place them in specific locations, you can use syntax such as this:
arrayname = "Element 1" arrayname = "Element 2"
Example 16-8 shows a simple script that creates an array, loads it with some values, and then displays them.
Example 16-8. Creating, building, and printing an array
<script> numbers =  numbers.push("One") numbers.push("Two") numbers.push("Three") for (j = 0 ; j < numbers.length ; ++j) document.write("Element " + j + " = " + numbers[j] + "<br />") </script> ...