• Use to perform the same action over and over again.
• Use when number of cycles is known.
• Can nest loops in loops.
• Pseudo-code example: THIS IS NOT JAVASCRIPT

for i = 0 to 10
   print i
next i

• Example code for for loop

for (i = 0; i <= 10; i++) {
    document.write(i);
};

Translation please...

for (start; continue while this is true; do this at end of loop) {

Code to do each loop ... can be multiple statements

};

• Use to perform same action repeatedly
• Use when number of cycles is not known
• Kind of like an if statement that keeps going while the condition is true
• Will be an infinite loop if condition is always true
• There is also a do...while loop which is very similar
• Example code for a while loop

var i = 0
while(i <= 10) {
    document.write(i);
};