Loops

Question 1

while

Answer 1

While (condition) { //while this is true
    //excite code
}

while (numb < 20) {
console.log(numb++);
}

Question 2

do while

Answer 2

do {
numb+=1;
console.log(numb);
} while (numb < 20);

• do while executes code block first prior to conditional statement i

Question 3

for

Answer 3

for (var i = 0; i<20; i++) {
     console.log(i);
}
each time the loop is run 1 is added to the i variable. The loop terminates when i equals 20
• each ; section can have more than 1 expression which you can do by separating with , see next card

Question 4

For loop multi-expression

Answer 4

for (var i =0, phrase="hi mom"; i<20; i++) {
       console.log(phrase + " " + I);
}

• notice the , separating the multi-expressions.

Question 5

Nested for loop

Answer 5

for (i=1; i<=4; i++) {
   console.log(i + " Outer       loop");
   for (j=1; j<=4;j++) {
       console.log(j + " inner loop");
   }
}
• first loop iterates once. Inner loop 4 times. Then first loop 1 inner loop 4; etc

Question 6

Loop

Answer 6

• used to repeat statements or task

Question 7

conditional

Answer 7

• a statement that executes code after checking a condition.
• if something is true, do this. Otherwise, do that

Question 8

Loop

Answer 8

• As long as something is true, keep doing this

* e.g. As long as you are thirsty, keep drinking water.