Arrays in JavaScript are declared as objects. var c = new Array( 5 ); Allocates 5 spaces in memory and returns the address of the first space to the variable c. This address cannot be extrapolated because pointers are not specifically implimented within JavaScript, although c is technically a pointer, as are all variables. c = [1, 5, 4, 77, 3]; Assigns the array 1, 5, 4, 77, 3 to the array within c. If we want to traverse the array we need only do the following: var j; for (j = 0; j < c.length; ++j) { c[j]; } Arrays have a length attribute which is public. If we want to output an array we do not need to traverse the array. document.writeln(c);