While Loop

• If you do not know how many times a loop will execute, use a while or do-while loop.
• These loops execute until a condition becomes true. This condition test is contained in parenthesis after the while statement.  It is follwed by a block of code contained in curly braces.
• Ideal for a situation where you prompt users, or change the value of the test variable within the code block.
• Example:

var registeredStudents = 0;
while(registeredStudents <= 24) {
    addToClass(student);
    registeredStudents++;
}
 
• The code in the block will execute until the number of registered students exceeds 24.


 Do-While Loop
 

Created by:  Brandan Jones January 4, 2002