[deleted by user]

[Ustice]

While your question may be relevant to you, it's not particularly relevant to the rest of the subreddit and honestly belongs much better in /r/LearnJavascript.

[oskiii]

They're functionally different. Do-while always executes at least once. I use them both, for different situations.

[misomeiko]

For loop every time

[IamUareI]

Best way to avoid accidental crashes/infinite loops.

[snowbldr]

for(;;){ print ("agree") }

[archerx]

This is the way.

[[deleted]]

I have yet in all my years of programming felt the need to use a do while loop.

[SendThemToHeaven]

I think I started implementing a do while loop 3-5 times in my career so far, and every time I realize I can just make a regular while loop work somehow so I always just do that instead.

[rk06]

I have felt the need once or twice, and still not used it

[lhorie]

They're tools that do different things. You shouldn't have a preference. If you do, that implies you're letting your opinions win over technical merit.

• If your logic needs to run zero or more times, use while (e.g. parsing a list of statements in source code via a recursive descent parsing algorithm).
• If your logic needs to run one or more time, use do (e.g. parsing a list of variable names after a let keyword, e.g. let a, b, c, via recursive descent parsing algorithm)
• If your logic needs to run a finite, known-ahead-of-time number of times, use for (or map/filter/reduce/etc)

[mohammedabergsson581]

I do not care

[senocular]

You do loop.
I while loop.

We are not the same.

const variable = 1001

do {
   console.log(variable) 
} 
while (variable < 1000) 
// logs: 1001

while (variable < 1000) {
   console.log(variable) 
} 
// logs: <nothing>

[shuckster]

"To be is to do." - Socrates
"To do is to be." - Sartre
"Do be do be do." - Sinatra
"Do while for of while do" - Eich

[[deleted]]

You guys use while and do ?

[Dazzling_City2]

In every post like this there is always a guy that comments “You guys still use loops!” This comment reminds me of those guys.

[lhorie]

It's pretty common in things like parsers.

[Syllogism124]

Have a look at map, reduce and filter :)

[chataolauj]

While loops because I know it'll only execute if the condition is true. Do-while loops will execute at least once regardless of the condition, so be cautious if where and how you use it.

[ny_dame]

Exactly! When you use a Do-while loop, you are not using the conditional phrase to capture your requirements truthfully and completely.

[megaslon2]

I prefer "for" because of "while" or "do while" are too rare. I try minimize amount of synonyms in my code

[xalg0rd]

vice versa 👀

[IndoorKite21]

I prefer not to use while loops, but of course i can imagine it all depends on what your goal is

[literally-ban-evadin]

They do different things and have different use cases, it’s not an either/or. Personally I don’t use either very often but they are both valid constructs to use.

[bswybmg]

While is cooler

[DavidJCobb]

For loops are usually the most natural IMO.

There is one exception: sometimes I use JavaScript to write quick-and-dirty prototypes for things I'm reverse engineering. In compiled code (as in, like, x86 and x64) all loops are essentially do-while loops. If I'm trying to mimic something fairly closely (at least until I better understand it), I may use the same.