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JavaScript JavaScript Foundations Functions Anonymous Functions

Michael Criste
Michael Criste
5,045 Points
Posted by Michael Criste
Michael Criste
5,045 Points

It says I'm missing parentheses at the end, but it matches my notes.

I've tried several formats. I don't think the one I have currently is correct. I don't think I need to have the variable name of the function at the very end of the anonymous function. How can I get this to pass. It says it's an issue with the parentheses at the end, but when I refer to my notes there doesn't seem to be anything wrong.

index.html 
<!DOCTYPE html>
<html lang="en">
  <head>
    <title>JavaScript Foundations: Functions</title>
    <style>
      html {
        background: #FAFAFA;
        font-family: sans-serif;
      }
    </style>
  </head>
  <body>
    <h1>JavaScript Foundations</h1>
    <h2>Functions: Anonymous Functions</h2>
    <script>
      var anonymousFunction = function () {

      };

      (function () {
        window.didExecute = true;
      })(anonymousFunction)
    </script>
  </body>
</html>

1 Answer

Hugo Paz
Hugo Paz
15,622 Points
Hugo Paz
Hugo Paz
15,622 Points

Hi Michael,

You need to make the last anonymous function execute:

 (function () {
        window.didExecute = true;
      })

To make any function auto executable you wrap it in parenthesis and use a set of parenthesis at the end , passing any arguments there if necessary.

So the answer is:

 (function () {
        window.didExecute = true;
      })()

To help you understand the concept:

//this
function test(){
console.log('test');
}
//is the same as this
var test = function(){
console.log('test');
}
//both are called like this
test();