While Loop

Syntax :

while(CONDITION) {

BODY

}

This loop will continuasly execute the statements in the body as long as a given condition is true. This loop must be handleed 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 similler 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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