Page 102 - DCAP202_Fundamentals of Web Programming
P. 102
Unit 8: Programming Constructs in JavaScript
<html> Notes
<body>
<script type=”text/javascript”>
var i=0;
for (i=0;i<=5;i++)
{
document.write(“The number is “ + i);
document.write(“<br />”);
}
</script>
</body>
</html>
Output
The number is 0
The number is 1
The number is 2
The number is 3
The number is 4
The number is 5
Explanation:
This for loop starts with i=0.
As long as i is less than, or equal to 5, the loop will continue to run.
i will increase by 1 each time the loop runs.
8.2.2 The While Loop
The while loop loops through a block of code while a specified condition is true.
Syntax
while (var<=endvalue)
{
code to be executed
}
Did u know? The <= could be any comparing statement.
Example: while loop example
The example below defines a loop that starts with i=0. The loop will continue to run as long as
i is less than, or equal to 5. i will increase by 1 each time the loop runs
<html>
<body>
<script type=”text/javascript”>
var i=0;
while (i<=5)
LOVELY PROFESSIONAL UNIVERSITY 95
