Posted on: November 6, 2009 at 12:00 AM
JavaScript Loops Types:
In Java programming language a loop is a language construct which allows the statements to execute again and again. Loop can be achieved both in iterative(for, while, do-while) and recursive method(when a function or method calls itself).
JavaScript provides for, while, do-while, and foreach loop. Following examples will help you to learn loops:
JavaScript Loop Functions Example 1:
<html>
<head>
<title>Loop in Javascript </title>
<script type="text/javascript" >
for (x=1;x<=10;x++ )
{
document.write(x+"<br/>");
}
</script>
</head>
<body>
</body>
</html>
Output:
1
2
3
4
5
6
7
8
9
10
JavaScript for Loop Example 2:
<html>
<head>
<title>My Firt JavaScript File </title>
<script type="text/javascript" >
x=1;
while(x<=10)
{
document.write(x+"<br/>");
x+=2;
}
</script>
</head>
<body>
</body>
</html>
Output:
1
3
5
7
9
Java While Loop Example 3:
<html>
<head>
<title>My Firt JavaScript File </title>
<script type="text/javascript" >
x=1;
do
{
document.write(x+"<br/>");
x++;
}while(x<=10);
</script>
</head>
<body>
</body>
</html>
Output:
1
2
3
4
5
6
7
8
9
10
Example 4:
<html>
<head>
<title>Write your title here </title>
<script type="text/javascript" >
var x;
var str=new Array();
str[0]="This";
str[1]="is";
str[2]="new";
str[3]="string";
for(x in str)
{
document.write(str[x]+"<br/>");
}
</script>
</head>
</html>
Output:
This
is
new
string
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