scope - Global variables in Javascript across multiple files

A bunch of my JavaScript code is in an external file called helpers.js. Inside the HTML that calls this JavaScript code I find myself in need of knowing if a certain function from helpers.js has been called.

I have attempted to create a global variable by defining:

var myFunctionTag = true;

In global scope both in my HTML code and in helpers.js.

Heres what my html code looks like:

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Is what I am trying to do even feasible?

Answer

You need to declare the variable before you include the helpers.js file. Simply create a script tag above the include for helpers.js and define it there.

     
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