Syntax error Illegal return statement in JavaScript

Question

I am getting a really weird JavaScript error when I run this code    lt script type    text javascript  gt  var ask   confirm     message      if  ask    false        return false          else       return true     lt  script gt    In the JavaScript console it says   Syntax Error  Illegal return statement   It occurs at return true  and return false    I am echoing this javascript from a php function  the  message variable is one of the php parameters   What is wrong with my code

User · Answer

This can happen in ES6 if you use the incorrect (older) syntax for static methods:

export default class MyClass
{
    constructor()
    {
       ...
    }

    myMethod()
    {
       ...
    }
}

MyClass.someEnum = {Red: 0, Green: 1, Blue: 2}; //works

MyClass.anotherMethod() //or
MyClass.anotherMethod = function()
{
   return something; //doesn't work
}

Whereas the correct syntax is:

export default class MyClass
{
    constructor()
    {
       ...
    }

    myMethod()
    {
       ...
    }

    static anotherMethod()
    {
       return something; //works
    }
}

MyClass.someEnum = {Red: 0, Green: 1, Blue: 2}; //works

User · Answer

In my experience  most often this error message means that you have put an accidental closing brace somewhere  leaving the rest of your statements outside the function    Example    function a         if  global block    syntax error is actually here - missing opening brace        return          this unintentionally ends the function      if  global somethingelse             Chrome will show the error occurring here            but actually the error is in the previous statement        return                do something

User · Answer

return only makes sense inside a function  There is no function in your code   Also  your code is worthy if the Department of Redundancy Department  Assuming you move it to a proper function  this would be better   return confirm   json encode  message        EDIT much much later  Changed code to use json encode to ensure the message contents don t break just because of an apostrophe in the message

User · Answer

If you want to return some value then wrap your statement in function   function my function       return my thing       Problem is with the statement on the 1st line if you are trying to use PHP   var ask   confirm      message         IF you are trying to use PHP you should use    var ask   confirm   lt  php echo      message       gt      now message with be the javascript string

User · Answer

in javascript return statement only used inside function block  if you try to use return statement inside independent if else block it trigger syntax error   Illegal return statement in JavaScript  Here is my example code to avoid such error     lt script type    text javascript  gt   function        var ss   no       if getStatus ss            alert  Status return true            else          alert  Status return false                function getStatus ask           if ask   yes                     return true                         else                   return false                         lt  script gt    Please check Jsfiddle example

User · Answer

where are you trying to return the value  to console in dev tools is better for debugging   lt script type    text javascript  gt  var ask   confirm     message      function answer      if ask  false       return false           else       return true        console log  ask      ask   console log  answer      answer      lt  script gt

[javascript] Syntax error: Illegal return statement in JavaScript

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