Question

Activity 11: JS-Loops and Functions
Task 1:
Use JavaScript for loop to print the first 5 non-zero integers on each line.
Task 2:
Use JavaScript while loop to print the first 5 non-zero integers on each line.
Task 3:
Use JavaScript for loop to print the first 5 even integers on each line.
Task 4:
Write a JavaScript function to multiple two numbers and return the result.
Task 5:
Write a JavaScript factorial that asks users to enter a positive and return the result.
i) Without using recursion ii) Using recursion Task 6:
Use a nested for or while loop to produce a table below.
1,1 1,2 1,3 1,4 1,5
2,1 2,2 2,3 2,4 2,5
3,1 3,2 3,3 3,4 3,5
4,1 4,2 4,3 4,4 4,5
5,1 5,2 5,3 5,4 5,5

Answer 1

1) var i;
for (i = 0; i <= 5; i++) {
console.log(i + 1);
}

2)

var i = 0;

while (i <= 5) {
console.log(i + 1);
i++;
}

3)

for (i = 1; i <= 10; i++) {

if(i % 2 == 0)

{

console.log(i);

}

}

4)

function prod(p1, p2) {
  return p1 * p2;   // The function returns the product of p1 and p2
}

5)

//Using recursion

function factorial(n) {

if(n == 0)

{

return 1;

}
  return n * factorial(n - 1);
}

//Without recursion

function factorial(n) {

var prod = 1;

for(i = 1;i <= n;++i)

{

prod *= i;

}

return prod;
}

6)

var i = 1;

var j = 1;

var text = "";

for(i = 1;i <= 5;i++)

{

text = "";

for(j = 1;j <= 5;j++)

{

text += " " + i + "," + j + " ";

}

console.log(text);

}

OUTPUT: