The for Loop
The ‘for’
loop is the most compact form of looping. It includes the following three
important parts:
·
The loop initialization
where we initialize our counter to a starting value. The initialization statement
is executed before the loop begins.
·
The test statement which
will test if a given condition is true or not. If the condition is true, then
the code given inside the loop will be executed, otherwise the control will
come out of the loop.
You can put all the three parts in a single line separated by
semicolons.
Flow Chart
The flow chart of a for
loop in JavaScript would be as follows:
Syntax
The syntax of for loop is
JavaScript is as follows:
for (initialization; test condition; iteration
statement){ Statement(s) to be executed if test condition is true
}
Example
Try the following example to learn how a for loop works in JavaScript.
<html>
<body>
<script
type="text/javascript">
<!--
var count;
document.write("Starting
Loop" + "<br />");
for(count = 0;
count < 10; count++){
document.write("Current
Count : " + count );
document.write("<br
/>");
}
document.write("Loop
stopped!");
//-->
</script>
<p>Set the
variable to different value and then try...</p>
</body>
</html>
Output
Starting Loop
Current Count : 0
Current Count : 1
Current Count : 2
Current Count : 3
Current Count : 4
Current Count : 5
Current Count : 6
Current Count : 7
Current Count : 8
Current Count : 9
Loop stopped!
Set the variable
to different value and then try...
0 comments:
Post a Comment