Help please! I just started learning js. Why is the output of this code 10

Question

var count = 0;
for(i=0;i<3;i++){
for(j=3;j>0;j--){
count++;
}
}
alert(++count)

//help me to understand thanks!!

Answer 1

Each loop executes 3 times, as one is into another, you get 3*3=9 times. Then you increase count before output and get 10.

Answer 2

for i=0(condition true)
it will enter into next for loop
for j=3(condition true)
count increments to 1
again j=2(condition true)
count increments to 2
again j=1(condition true)
count increments to 3
now j=0 (condition false)
so j loop terminates again go to i loop
for i=1
j=3,j=2,j=1
increments count to 6
i=2
j=3,j=2,j=1
Increments count to 9
i=3(condition false)
i loop terminates
now our count=9
in the alert section u are pre incrementing so first increments value and then print
increments 9 to10
this is how it works
hope it helps u

Answer 3

First
when ■ i=0
■ j=3 -> j=2 -> j=1
count=3
Second
when ■ i=1
■ j=3 -> j=2 -> j=1
count=6
Third
when ■ i=2
■ j=3 -> j=2 -> j=1
count=9
fourth
when ■ i=3
■ i>3
condition false

//count=9
alert(++count) //count=10
alert(10)
will alerts 10