Is innerHTML incapable of executing JavaScript code?

Experimenting with a new technique where I divide my code into separate files to create multiple HTML pages instead of one large one. Using ajax to load them and then setting the content as innerHTML to a parent div results in clean code that works well in modern browsers. However, I recently discovered that when an external page contains a <script> tag, the JavaScript within it is not parsed or loaded into the parent page's JavaScript context, causing methods and variables from these external snippets to be missing.

I found a workaround by manually reading the script tag's content and using eval() on it, which solves the issue. Nevertheless, I'm wondering if there is a more native way to include the script in these external files, or if this approach is the only option available for achieving my goals.

Thanks in advance

Answer №1

Using the innerHTML method is not suitable for this task. It would be more appropriate to load the external file as a DOM object (which is where the name XMLHTTPRequest comes from) so that the script tag can be properly processed before being added.

An interesting experiment with Chrome using JavaScript (right on this page!) reveals that using innerHTML to add a script element does not execute it, while this approach does:

document.body.appendChild( document.createElement('script') ).innerText = "console.log( 'hello, world!' );";

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