Double trouble: yepnope mistakenly loading JS file twice

Trying to load a JS file through yepnope with the given code:

yepnope({
    load: '<?php echo base_url(); ?>static/js/highlight.min.js',
    complete: function()
    {
        hljs.tabReplace = '    ';
        hljs.initHighlightingOnLoad();
    }
});

Upon checking in firebug, it seems that the JS file is being loaded twice. Is there an error in my approach as I seem to be confused?

Answer №1

Next time, I should make sure to thoroughly search for existing solutions before asking.

I noticed my dev tools showing two requests - why is everything loading twice?

Depending on the browser and server you're using, this could have a few different explanations. Due to the operation of yepnope, there are typically two requests made for each file. The first request is to bring the resource into the cache and the second is to execute it (which should be instant since it's already cached). It's normal to see two requests, as long as the second one is cached. If you find that the second request isn't being cached (leading to doubled script load times), then ensure that you have set the appropriate cache headers to enable script caching. Proper caching is crucial for yepnope to function correctly. In fact, we even run tests in our suite to verify that files aren't loaded twice. If you suspect a browser bug causing double loading, we recommend running our test suite to confirm if the double loading test passes.

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