Calling a Function defined inside another function in Javascript

Question

I am calling a function on button click like this    lt input type  button  onclick  outer     value  ACTION  gt    function outer          alert  hi               It works fine and I get an alert   Now when I do like this   function outer          function inner             alert  hi              Why don t I get an alert    Though inner function has a scope available in outer function

User · Answer

you can also just use return     function outer          function inner             alert  quot hi quot          return inner       outer

User · Answer

If you want to call the  inner  function with the  outer  function  you can do this   function outer           function inner               alert  hi                return   inner        And on  onclick  event you call the function like this    lt input type  button  onclick  outer   inner     value  ACTION  gt

User · Answer

The scoping is correct as you ve noted  However  you are not calling the inner function anywhere   You can do either   function outer              when you define it this way  the inner function will be accessible only from         inside the outer function      function inner             alert  hi              inner       call it     Or  function outer          this inner   function             alert  hi              lt input type  button  onclick   new outer    inner     value  ACTION  gt

User · Answer

Again  not a direct answer to the question  but was led here by a web search   Ended up exposing the inner function without using return  etc  by simply assigning it to a global variable  var fname   function outer         function inner             console log  quot hi quot              fname   inner     Now just fname

User · Answer

You are not calling the function inner  just defining it   function outer          function inner             alert  hi               inner      Call the inner function

User · Answer

You could make it into a module and expose your inner function by returning it in an Object   function outer          function inner             console log  hi              return           inner  inner          var foo   outer    foo inner

User · Answer

You can also try this Here you are returning the function  inside  and invoking with the second set of parenthesis   function outer       return  function inside        console log  Inside inside function            outer        Or  function outer2         let inside   function inside          console log  Inside inside               return inside      outer2

[javascript] Calling a Function defined inside another function in Javascript

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