Javascript Array:

Variables can hold one value at a time. If you want to store some more values of same type then  you need a special varibale theat can be store more than one value. The special type of variable is called as an array. Array is a variable which can hold more than one value, at a time with index.

Lets see with an example:

If you want to show total of 2 variables the you will use variable with name “total” BUT if you want to store name of multiple users then? there is a problem to create multiple variables for dynamic names if you fetched from database.. Use array at that time.

Example:

Programmer: Prashant, Deep, Dear, Dearphp

You will store these all names in a single variable with an indexes like:

var programmer = new Array(); // Array declaration

programmer[0] = ‘Prashant’;
programmer[1] = ‘Deep’;
programmer[2] = ‘Dear’;
programmer[3] = ‘Dearphp’;

Our aim is achieved by declaring one variable named “programmer” & placed values in it with indexes.

how to print that values or how to access from array?
use for loop

for(index in programmer) {
alert(programmer[index]);
}
This loop will alert 4 times & each time iterate through 0 to 3 index & alert a value for that index as “Prashant”…”Dearphp”
OR
alert(programmer[1]); // alert “Deep”

Hope you will understand.