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JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops Exiting Loops

For loop - Code took too long to run

This code took too long to run (my initial answer): for (var i=4; i=156; i++) { console.log(i); }

This code was accepted: for (var i=4; i<=156; i++) { console.log(i); }

The only difference between the two is that I changed i=156 to i<=156. Can anyone tell me why I can't use merely "=" ? The result should be the same if you think about it logically ... shouldn't it?

Thanks, Nick

I am not sure why this is not displaying correctly when I post the code. It just cuts off half of my sentence, even though I see the full sentence when I edit the question ...

The only difference between the two is that I changed i is equal to 156 to i is equal to or smaller than 156.

2 Answers

Ryan Field
PLUS
Ryan Field
Courses Plus Student 21,242 Points

Hey, Nick. What's happening here is that you are using a single equals sign in the second statement instead of a comparison operator (== or ===). When you do this, you are setting the value of i to 156 and doing this in a while statement will produce true, effectively making the for loop go on forever.

If you want to have the loop cycle up until 156, then you can use the less-than-or-equal-to operator, like this:

 for (var i=4; i<=156; i++) {
 console.log(i);
 }

Got it. Thanks for the quick response, Ryan!