for loop vs while loop

Question

What is the difference between using a regular while loop and a for loop? they seem similar....please list pro and cons

codeoverload · Accepted Answer

Use a for loop if you know how often you want to run the loop.  
Use a while loop if you don't know how often you want to run the loop and if it depends on a specific condition.  
Example:  
``` javascript
var userInput = "";
// You don't how many guesses the user needs
while (userInput != "4") {
  userInput = prompt("Guess the secret number: ");
}
// But you do know how often you want to print "That was correct!"
for (var i = 0; i < 3; i++) {
  alert("That was correct!");
}
```
Hope this helps!
(But for the next time: consider asking google (http://lmgtfy.com/?q=Difference+between+for+loops+and+while+loops) first, if it's such a basic question ;))

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Greg Schudel

Greg Schudel

for loop vs while loop

1 Answer

codeoverload

codeoverload