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» » How to work with Javascipt Array


Array is a very powerful concept in any programming language. It can strore same or any kind of object data in its elements.
In his post I tried to venture my learning on storing and displaying array elements in Javascript.
Storing a javascript array elements can be divided into two parts..



Static:

<SCRIPT language = "JavaScript">
<!-- Begin Hiding JavaScript
cities = new Array(5);
cities[0] = "Hyderabad";
cities[1] = "Kolkata";
cities[2] = "Delhi";
cities[3] = "Mumbai";
cities[4] = "Panaji";
</script>


Dynamic:


<SCRIPT language = JavaScript>
         var elements= prompt("Enter How Many elements", "Elements");
         cities = new Array(elements);
 for(var i=0;i<=(elements-1);i++)
{   
   var cities[i]= prompt("Enter your city Name", "City");
}
 </SCRIPT>

Now to display those elements there are 3 ways:
One traditional for loop--
first find out the length of the array---

len=cities.length();
for(i=0;i<=len-1;i++)
{
document.write(cities[i]+"<BR>");
}


Second method could be more static


document.write(cities[0]+"<BR>");
document.write(cities[1]+"<BR>");
document.write(cities[2]+"<BR>");
document.write(cities[3]+"<BR>");
document.write(cities[4]+"<BR>");



The Third method could be---


join_crit =  cities.join();
document.write(join_crit);

I like this method to display all the elements of an array.

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