is it possible to return more than once in javascript function

Question

my function delete data from store but at the same time i want to save the deletion time so i tried use return twice is right like i wrote in the function or it cause any problem later ? thank for help

function deleteStudent( $indexedDB, student, $scope, studentId, userId) {
    return $indexedDB.openStore('student', function (store) {
        student["delete_time"] = new Date().toISOString();
        return saveItemInStore(store, student, userId);

        return store.delete(studentId);
    });
}

A `return` statement exits the function immediately, so no subsequent `return` statement will be run. — Pointy, Mar 02 '16 at 23:36
pointy is it posible to write in other way or i have to creat new function — george, Mar 02 '16 at 23:39
Well your code has more problems than just the multiple `return` statements. You can't return *anything* from that `indexDB` callback; it's an asynchronous operation. — Pointy, Mar 02 '16 at 23:42
I guess you should have a look at [How do I return the response from an asynchronous call?](http://stackoverflow.com/q/14220321/218196) — Felix Kling, Mar 02 '16 at 23:44

score 0 · Answer 1 · answered Mar 03 '16 at 00:01

0

The only problem this will cause is that the second return statement will never execute.

Possibly you could re-write the return statement like this...

return (saveItemInStore(store, student, userId) && store.delete(studentId));

This will return "true" if both statements succeed. Additionally "store.delete" will not execute if "saveItemInStore" fails. You'll need to determine if this is appropriate for your situation.

answered Mar 03 '16 at 00:01

user1751825

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in both cases mine and yours the store is not excuted, maybe aboth expression are identical and the first return only excuted – george Mar 03 '16 at 00:27
What does the saveItemInStore function actually return? If the store.delete is not executing in my suggested code, then it means saveItemInStore's return value is being interpreted as false. – user1751825 Mar 03 '16 at 00:30
Both expressions aren't identical. In yours the second statement can never execute. In mine it will execute if the first returns a "truthy" value. – user1751825 Mar 03 '16 at 00:32
An explanation of a "truthy" value can be found at https://developer.mozilla.org/en-US/docs/Glossary/Truthy – user1751825 Mar 03 '16 at 00:39

Andrew Willems · Answer 2 · 2016-03-03T14:18:15.700

Objects are tailor-made to allow you to return multiple pieces of information from a function. Just create as many properties as desired on a single object and return that object. Of course, the code that calls the function needs to know that that is what is being returned and use it accordingly.

var desiredInfo = myFunc();

document.write("<p>I learned both to " + desiredInfo.first + " and to " + desiredInfo.second + ".</p>");


function myFunc() {

  var objToReturn = {};

  var someAdvice = "buy low";
  objToReturn.first = someAdvice;

  var moreAdvice = "sell high";
  objToReturn.second = moreAdvice;

  return objToReturn;

}

score 0 · Answer 3 · edited May 23 '17 at 11:45

Perhaps something like this fits your bill.

function mytestfunc(){
    alert("I will be called first")
    return (function(){
    alert("I will be called second");
    //saveItemInStore placeholder
    return (function(){
        alert("I will be called third")
      //store.delete placeholder
    })();
  })();
}

mytestfunc();

Additionally, for reference check this stackoverflow question to know more about self executing functions.

is it possible to return more than once in javascript function

3 Answers3