While Loop

Syntax :

while(CONDITION) {

BODY

}

This loop will continuously execute the statements in the body as long as a given condition is true. This loop must be handled with care. Always make sure that the given condition will be met - or this loop will continue forever. Let us see an example with the while loop that uses while loop in a situation very similar to the one given in the for loop example.

alert("High School Vs College")

//Make an array with the list differences
var diff = new Array(9);

diff[0] = "In high school, if you mess up you can usually sweet-talk your way out of it. In college, you're lucky to ever talk with the professor.";
diff[1] = "In high school, fire drills are planned by the administration; in college, by the drunk boys on their way home when the bars close.";
diff[2] = "In high school, when the teacher said, \"Good morning,\" you mumbled back. In college, when the professor says, \"Good morning,\" you write it down.";
diff[3] = "In college, there's no one to tell you not to eat pizza three meals a day.";
diff[4] = "In college, your dad doesn't pay for dates.";
diff[5] = "In high school, it never took 3 or 4 weeks to get money from Mom and Dad.";
diff[6] = "In college, when you miss a class (or two or three), you don't need a note from your parents saying you were skip....uh, sick that day.";
diff[7] = "In high school, you can't go out to lunch because it's not allowed. In college, you can't go out to lunch because you can't afford it.";
diff[8] = "In college, you can blow off studying by writing lists like this.";

//Display the list
index = 0
while(index < diff.length) {
alert(diff[index])
index++
}

This basically displays all the elements in an array - the same thing we did using the for loop. Notice how the while loop differs from the for loop. In the while loop, only the condition will be given inside the while loops parenthesis - '(' and ')'.

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Comments

Anonymous at 26 Mar, 2008 04:28

I need you to help me with the XML while loop syntax, when using stylus studio

Regards,
Mavula Mabena.

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Ramesh at 08 Nov, 2008 12:55

Hi i am ramesh , i want for loop output
12345 54321
1234 4321
123 321
12 21
11
plz send output

kindly send Urgent

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Anonymous at 09 Mar, 2009 07:21

HTML tags a, strong, em, b, i, code, pre, p and br allowed. Other tags will be shown as code(< will become <). Urls, Line breaks will be auto-formated.

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Anonymous at 25 Mar, 2009 10:17

who can help to do this question?
Using function, write a program (you can name the function as read()) which can read one integer value from 1 to 10. Input will stop once the user refuses to enter more integers. (Hint: you can use while or do..while loop). Then write another function (you can name the function as print( )) which print the summation of all the numbers.

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hazwan at 04 Mar, 2010 01:55

A palindrome is a string that is spelled the same way forward and backward.
Some examples of palindromes are: “radar”, “madam”, “tenet”, “kayak”.
Write a function called testPalindrome that returns 1 if the string stored in the
array is a palindrome and 0 otherwise. Use at least one function

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Comment Formating : HTML tags a, strong, em, b, i, code, pre, p and br allowed. Other tags will be shown as code(< will become <). Urls, Line breaks will be auto-formated.

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