[About for loop ]Why different statements but same results?

Question

PROBLEM

"Repetition is the mother of learning, the father of action, which makes it the architect of accomplishment." - Zig Ziglar.
Inspired by these words, let's create a little program that will output an expression which is given as input, 3 times.

Task
Complete the code to output the given expression 3 times.

Sample Input
Learning is fun!

Sample Output
Learning is fun!
Learning is fun!
Learning is fun!
--------------------------------------------------------------------------------
MY CODE

var expression = readLine();

//your code goes here
for(var i=0; i<=3; i++){
console.log(expression)
}

Why it prints "Learning is fun!" 4 times instead of 3? when my statement is i<=3?
pls help, many thanks!

Answer 1

Simba i < 3
i = 0, 1, 2 -> 3 iterations

Answer 2

For i <= 3
i = 0,1,2,3 means 4 iterations
but, i < 3
i = 0,1,2 -> 3iterations

Answer 3

Wow, I got it, very helpful, thanks.😊