Javascript: Loop part 1

 

Gunakan loop untuk mempermudahkan urusan kita.

// Write five console.log statements.

console.log(1);
console.log(2;
console.log(3);
console.log(4);
console.log(5);
 
Kepada:

for (var counter = 1; counter < 6; counter++) {
    console.log(counter);
}

atau

for (var i = 1; i < 6; i = i + 1){
    console.log(i);
}

 

contoh bermula dari 4 hingga ke 23:

for (var i = 4; i < 24; i = i + 1) {
    console.log(i);
}

 

We can increment up by any value by writing i += x, where x is how much we want to increment up by.e.g., i += 3 counts up by 3s.





We can decrement down by any value by writing i -= x.

Contoh:




-Make it start counting from 5. Please!


-Stop the counting when it prints out 50.


-Only count every fifth number. So we want to increment i by 5.

for (var i = 5; i < 51; i+=5) {
    console.log(i);
}

Contoh loop menurun adalah: 10 hingga ke 0.

for (var i = 10; i >= 0; i--) {
    console.log(i);
}

 

Once more, for practice: write a forloop that gets the computer to count down from 100 until 0 by 5. This time, make sure not to print 0.

// Write your very own for loop!

for (var i=100;i>0;i-=5)
{
    console.log(i);
}