IsArray Function

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IsArray function returns a Boolean value that indicates whether a specified variable is an array. If the variable is an array, it returns True, otherwise, it returns False. The IsArray function checks for the existence of the string passed in the array collection. Returns True if the string value or exists and False if it does not exist. The notation used to refer to an element of an array consists of the variable name followed by parentheses containing an index number indicating the desired element. In the example, the first statement creates a variable named A. The second statement assigns an array to variable A. The last statement assigns the value contained in the second array element to another variable. The Array function is used to create a static one-dimension array. You cannot declare a dynamic array using the Array function.

Note :-
The first element in an array is always labeled zero, for example, myarray(0). The List argument is a listing of values that will become the elements of the array

The Syntax of the IsArray function is :-

IsArray(variable)

Example#1 :-

Code :-
dim a(5)
a(0)="Saturday"
a(1)="Sunday"
a(2)="Monday"
a(3)="Tuesday"
a(4)="Wednesday"
document.write(IsArray(a))
Output :-

True

Example#2 :-

Code :-
dim a
a="Saturday"
document.write(IsArray(a))
Output :-
False

It can also be explained like this :-

Example#3 :-

Code :-
<% myarray = array("A", "B", "C", "D") %>
<% =myarray(0) %>
<% =myarray(1) %>
<% =myarray(2) %>
<% =myarray(3) %>
Output :-

A
B
C
D

Example#4 :-

Code :-
<% myarray = array(111, 222, 333, 444, 555) %>
<% =myarray(0) %>
<% =myarray(1) %>
<% =myarray(2) %>
<% =myarray(3) %>
<% =myarray(4) %>
Output :-

111
222
333
444
555

 

 

 

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