a simple 1d array without nesting

document.write("Initialize an array");
var array1=new Array();
array1[0]="One";
array1[1]=2;
array1[2]=new Date();
document.write("<p> array1 is: "+array1);

//change array element
array1[0]=1;

//access an array member
document.write("the first item:  "+array1[0]);

//property: length
document.write("array length: "+array1.length);

//loop method 1: c-like array loop
for(var i=0; i<array1.length; i++) {
  var val=array1[i];
  document.write(i+" => "+val+"<br/>");
}

//loop method 2: for ... in:  loop through index of array
for (var i in array1) {
  var val=array1[i];
  document.write(i+" => "+val+"<br/>");
}

//loop method3: for each ... in: loop through values of array
for each (var val in array1) {
  document.write(val+"<br/>");
}

//unshift: add element at the begining
array1.unshift("First");
for (var i in array1) {
  document.write(array1[i]+"<br/>");
}

//push: add element at last
array1.push("Last");
for  (var i in array1) {
  document.write(array1[i]+"<br/>");
}

//pop: remove the last element
document.write("removed the last element: "+array1.pop()+"<br/>");
for (var i in array1) {
  document.write(array1[i]+"<br/>");
}

//shift: remove the first element
document.write("removed first element: "+array1.shift()+"<br/>");
for  (var i in array1) {
  document.write(array1[i]+"<br/>");
}