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>
<!– 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>
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>”);
}
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>”);
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);
document.write(join_crit);
I like this method to display all the elements of an array.