JS nested functions

Question

I am using nested functions

Function mainfunction (callbackfun) {
 //some code + function (score)
 {
 var score = scoreString;
 alert(scoreString);
 callbackFun(score);
 }
} //--> I return this value to my calling function
mainfunction(function (anystring){
 alert(anystring); //-> this would return me the value in callbackfun 
}); 

What I want is access that value in anystring out like

var fetchvalue ;
mainfunction(function (anystring){
 fetchvalue =anystring; //-> this would return me the value in callbackfun 
}); 

Please guide me if am on the right track .

• Felix Kling: Have you tried it? Just a tip: JS is case sensitive, so it should be function instead of Function and your parameter is named callbackfun, not callbackFun. With this fixed, this is what your code is doing: jsfiddle.net/P3bBP. Is this what you want?
• acme: What is the question? What are you trying to achieve with your code? Edit: ok, after editing the question is visible ;-)

Answer 1

Tidying up your code a bit, correcting spelling errors etc..., and watching the output of the mainfunction gives you this working script. It is hard to tell if this answers your question, but it does send a variable to a callback function, and then get a return value from that callback.

function mainfunction(callbackfun){
 //some code + function (score)
 var scoreString = Math.random()*10000000
 var score = scoreString;
 alert(callbackfun(score));
}; // --> i return this value to my calling function
mainfunction(function(anystring){
 return anystring; //-> this would return me the value in callbackfun 
});