Blog

JavaScript Tutorial

Agent Signup

Free PR Checker

place order to get custom essay, custom term paper, custom research paper, thesis, disseration

promise to provide quality essays, term paper, research paper, thesis

free sample essays, term paper, research paper

Our Prices

Flash Order: (8 Hours)

$39/page Order Now

Rush Order: (2 Days)

$29/page Order Now

Normal Order: (5 Days)

$25/page Order Now

Economic Order: (14 Days)

$20/page Order Now

Super Saver: (2 Months)

$15/page Order Now

Limited Time Discount

Our Services

Essay Writing Services

Essay Help

Custom Essay & Term Paper Writing

Research Dissertation

Admission Documents

Editing & Proof Reading

Computer Applications

Web Design

How to Write Essays

How to an Write an Essay

How to Write a Book Report

How to Write a Thesis

Free Essay Samples

Abortion

Book Review: Get to Work

Film Review-Sicko

Sigmund Freud

Essays Topics

Application Essay

Argumentative Essay

Love Essay

Persuasive Essay

Buying Custom Essays

Buy Essay

Buy a Term Paper

Buy a Research Paper

Buy a custom essay

JavaScript For - While Loops - Break

Use For to loop through different HTML headers

<html>
<body>
<script type="text/JavaScript">
for (i = 1; i <= 6; i++)
{
document.write("<h" + i + ">This is header " + i);
document.write("</h" + i + ">");
}
</script></body></html>

For...In

Used to loop through elements of an array or properties of an object.

The code in the body of the for ... in loop is executed once for each element/property.

Syntax

for (variable in object)

    code to be executed

The variable argument can be a named variable, an array element, or a property of an object.

Loop Through an Array

<html>

<body>

<script type="text/JavaScript">

var x;

var mycars = new Array();

mycars[0] = "Saab";

mycars[1] = "Volvo";

mycars[2] = "BMW";

for (x in mycars){document.write(mycars[x] + "<br />");}

</script>

</body>

</html>

The while loop

The while loop is used when you want the loop to execute and continue executing while the specified condition is true.

while (var<=endvalue)
{
code to be executed
}

While Loop

<html>
<body>
<script type="text/JavaScript">
var i=0;
while (i<=10)
{
document.write("The number is " + i);
document.write("<br />");
i=i+1;
}
</script>
</body>
</html>

Result

The number is 0
The number is 1
The number is 2
The number is 3
The number is 4
The number is 5
The number is 6
The number is 7
The number is 8
The number is 9
The number is 10

Break

<html>

<body>

<script type="text/JavaScript">

var i=0;

for (i=0;i<=10;i++)

if (i==3){break;}

document.write("The number is " + i);

document.write("<br />");

</script>

</body>

</html>

The number is 0

The number is 1

The number is 2

Continue: break the current loop and continue with the next value.

<html>

<body>

<script type="text/JavaScript">

var i=0

for (i=0;i<=10;i++)

if (i==3){continue;}

document.write("The number is " + i);

document.write("<br />");

</script></body></html>

The number is 0

The number is 1

The number is 2

The number is 4

The number is 5

The number is 6

The number is 7

The number is 8

The number is 9

The number is 10