Does return stop a loop

Question

Suppose I have a loop like this   for  var i   0  i  lt  SomeArrayOfObject length  i         if  SomeArray i  SomeValue     SomeCondition          var SomeVar   SomeArray i  SomeProperty       return SomeVar          Quick question  does the return stop the execution of the loop in and of itself

User · Answer

In most cases  including this one   return will exit immediately   However  if the return is in a try block with an accompanying finally block  the finally always executes and can  override  the return in the try   function foo         try           for  var i   0  i  lt  10  i                  if  i   3    0                    return i     This executes once                               finally           return 42     But this still executes          console log foo        Prints 42

User · Answer

This code will exit the loop after the first iteration in a for of loop   const objc      name  1      name  2      name  3     for  const iterator of objc      if  iterator name    2        return        console log iterator name     1     the below code will jump on the condition and continue on a for of loop   const objc      name  1      name  2      name  3      for  const iterator of objc      if  iterator name    2        continue        console log iterator name      1    3

User · Answer

The answer is yes  if you write return statement the controls goes back to to the caller method immediately   With an exception of finally block  which gets executed after the return statement   and finally can also override the value you have returned  if you return inside of finally block  LINK  Try-catch-finally-return clarification  Return Statement definition as per    Java Docs      a return statement can be used to branch out of a control flow block   and exit the method   MSDN Documentation       The return statement terminates the execution of a function and   returns control to the calling function  Execution resumes in the   calling function at the point immediately following the call    Wikipedia      A return statement causes execution to leave the current subroutine   and resume at the point in the code immediately after where the   subroutine was called  known as its return address  The return address   is saved  usually on the process s call stack  as part of the   operation of making the subroutine call  Return statements in many   languages allow a function to specify a return value to be passed back   to the code that called the function

User · Answer

Yes  return stops execution and exits the function  return always   exits its function immediately  with no further execution if it s inside a for loop  It is easily verified for yourself   x000D   x000D  function returnMe       for  var i   0  i  lt  2  i          if  i     1  return i         console log returnMe     x000D   x000D   x000D      Notes  See this other answer about the special case of try catch finally  and this answer about how forEach loops has its own function scope will not break out of the containing function

User · Answer

The return statement stops a loop only if it s inside the function  i e  it terminates both the loop and the function   Otherwise  you will get this error  Uncaught SyntaxError  Illegal return statement       To terminate a loop you should use break

User · Answer

Yes  once the return statement is executed  the entire function is exited at that very point   Just imagine what would happen if it did not and continued looping  and executing that return statement each time  It would invalidate it s meaning of returning a value when you think about it

User · Answer

return  does exit the function but if you want to return large sums of data  you can store it in an array and then return it instead of trying to returning each piece of data 1 by 1 in the loop

[javascript] Does return stop a loop?

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