What is the reason behind the 6 and 10 being printed by this particular for loop?

Currently expanding my knowledge in JavaScript and came across this puzzling scenario. The output showing values of 6 and 10 has left me scratching my head. I need someone to break down the steps involved and shed some light on why these specific numbers are being displayed.

var apple = 1;
for (var apple = 0; apple < 10; apple = apple + 2) {
    
    orange = orange + 1;
}
console.log(orange);
console.log(apple);

Answer №1

Upon reviewing the code provided, it is evident that it will result in errors. The corrected version is as follows:

var orange = 1;
for (var apple = 0; apple < 10; apple = apple + 2) {
    
    orange = orange + 1;
}
console.log(orange);
console.log(apple);

In this scenario, the for loop will iterate 5 times:

  1. apple = 0, orange = 1
  2. apple = 2, orange = 2
  3. apple = 4, orange = 3
  4. apple = 6, orange = 4
  5. apple = 8, orange = 5
  6. apple = 10, orange = 6

The loop terminates on the 6th iteration when apple = 10, as it no longer satisfies the condition < 10. As a result, the final values are 6 and 10.

Answer №2

When initiating the for loop, apple is set to 0. With each iteration, apple increases by 2. Starting at 0, it becomes 2 after the first loop, 4 after the second, 6 after the third, 8 after the fourth, and finally 10 after the fifth loop. Once apple reaches 10, the loop ends. Therefore, when apple is printed, its value is 10.

The loop iterates 5 times, adding 1 to orange with each iteration. This results in orange having a final value of 1 + 5 = 6.

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