How to Make Global Variables Accessible Across Multiple JavaScript Files?

Accessing Global Variables across Multiple JavaScript Files

When working with JavaScript code distributed across multiple files, the need to share data becomes evident. One approach to achieving this is by using global variables. A user encounters an issue where a global variable defined in an external JavaScript file (helpers.js) remains inaccessible within the HTML file that calls it.

In an attempt to create a shared global variable, the user defines it both in the HTML global scope and within helpers.js. However, the value set in helpers.js doesn't seem to propagate to the HTML file.

The user's approach is technically feasible, but requires a slight modification. The key is to declare the global variable in the HTML file before including the external JavaScript file. Here's how it can be resolved:

<code class="html"><script type='text/javascript'>
  var myFunctionTag = false;
</script>
<script type='text/javascript' src='js/helpers.js'></script>
...
<script type='text/javascript'>
  // Rest of the code that depends on helpers.js
</script></code>

By defining the global variable in a script tag placed above the inclusion of helpers.js, it becomes accessible to both the external file and the rest of the code within the HTML file. This allows for the sharing of data between multiple JavaScript files.

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