web 2.0

ASP/VBScript Do … Loop

ASP/VBScript Do … Loop Repeats a block of statements while a condition is True or until a condition becomes True.

ShotDev Focus:
- Using Asp and Do … Loop

Syntax


Do [{While  | Until} condition]
[statements]
[Exit Do]
[statements]
Loop

Or, you can use this syntax:

Do
[statements]
[Exit Do]
[statements]
Loop [{While | Until} condition]

The Do…Loop statement syntax has these parts:

Part Description
condition Numeric or string expression that is True or False. If condition is Null, condition is treated as False.
statements One or more statements that are repeated while or until condition is True.
Remarks

The Exit Do can only be used within a Do…Loop control structure to provide an alternate way to exit a Do…Loop. Any number of Exit Do statements may be placed anywhere in the Do…Loop. Often used with the evaluation of some condition (for example, If…Then), Exit Do transfers control to the statement immediately following the Loop.

When used within nested Do…Loop statements, Exit Do transfers control to the loop that is nested one level above the loop where it occurs.

Example

asp_do_loop.asp


<% Option Explicit %>
<html>
<head>
<title>ShotDev.Com Tutorial</title>
</head>
<body>
<%
Dim i
i = 1
Do While i <= 5
Response.write("www.ShotDev.Com<br>")
i = i + 1
Loop
Response.write("<hr>")
i = 1
Do
Response.write("www.ShotDev.Com<br>")
i = i + 1
Loop While  i <= 5
Response.write("<hr>")
i = 1
Do Until i = 5
Response.write("www.ShotDev.Com<br>")
i = i + 1
Loop
Response.write("<hr>")
i = 1
Do
Response.write("www.ShotDev.Com<br>")
i = i + 1
Loop Until i = 5
%>
</body>
</html>

Create a asp file and save to path root-path/myasp/

Run
http://localhost/myasp/asp_do_loop.asp

Screenshot

ASP/VBScript & Do … Loop

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