What is the best way to asynchronously load an external javascript file in a popup.html file?

Question

What is the best way to asynchronously load an external javascript file in a popup.html file?

I have successfully implemented all the necessary functionalities, but I noticed a delay in loading the popup.html after adding an external javascript file. This file is only a few lines long, so the delay is quite frustrating.

To eliminate this lag, I believe that asynchronously loading the javascript file could be a solution.

The reference to the file in popup.html looks like this:

<script src="https://domain.com/myexternalscript.js"></script>

However, I am uncertain about how to implement asynchronous loading for this file. Can someone provide guidance on how to do this?

javascript asynchronous google-chrome-extension

Answer 1

Answer №1

If you're working on a project specifically tailored for Chrome, you may encounter issues with inlining scripts before they fully load. To address this concern, I've come up with an AJAX(jQuery) snippet that could potentially be of use to you:

   $.ajax({
            type: "GET", // Should we consider using post instead?
            url: "http://EXAMPLE.COM",   // Remember to update the URL accordingly
            datatype: "script", // Specify the expected data type 
            async: "true", // Although async is set as "true" by default, let's explicitly define it
            success: function(result) {
                // In this step, we dynamically append the retrieved script to the document
                var script = document.createElement('script');
                script.innerHTML = result;
                document.body.appendChild(script);

            },
            error: function(result) { 
                // Here, we handle errors similarly to how we handled success cases
                console.log(result); 
                var script = document.createElement('script');
                script.innerHTML = "alert('ERROR!')";
                document.body.appendChild(script);
            }

       });

Answer 2

If you're working on a project specifically tailored for Chrome, you may encounter issues with inlining scripts before they fully load. To address this concern, I've come up with an AJAX(jQuery) snippet that could potentially be of use to you:

   $.ajax({
            type: "GET", // Should we consider using post instead?
            url: "http://EXAMPLE.COM",   // Remember to update the URL accordingly
            datatype: "script", // Specify the expected data type 
            async: "true", // Although async is set as "true" by default, let's explicitly define it
            success: function(result) {
                // In this step, we dynamically append the retrieved script to the document
                var script = document.createElement('script');
                script.innerHTML = result;
                document.body.appendChild(script);

            },
            error: function(result) { 
                // Here, we handle errors similarly to how we handled success cases
                console.log(result); 
                var script = document.createElement('script');
                script.innerHTML = "alert('ERROR!')";
                document.body.appendChild(script);
            }

       });

Answer 3

Answer №2

Here are a couple of options that can help:

One solution is to relocate the script tag to the bottom of the html page.
Another option is to incorporate the defer attribute on the script tag. Do keep in mind that this may not be compatible with older browser versions.

Answer 4

Here are a couple of options that can help:

One solution is to relocate the script tag to the bottom of the html page.
Another option is to incorporate the defer attribute on the script tag. Do keep in mind that this may not be compatible with older browser versions.

Answer 5

Answer №3

The reason for the potential delay might be due to the use of a secure http (https) request rather than a standard http request. The impact of this could vary depending on your specific hosting setup, with arguments and evidence presented both in favor and against this notion.

Simply loading the file asynchronously may not resolve the issue, as it still involves making an http request - similar to how AJAX functions by retrieving information from the server without refreshing the page.

If the JavaScript code is minimal, consider directly including it in your .html file instead.

Additionally, the description of the problem you're facing is somewhat vague. Can you provide more details for better understanding?

Answer 6

The reason for the potential delay might be due to the use of a secure http (https) request rather than a standard http request. The impact of this could vary depending on your specific hosting setup, with arguments and evidence presented both in favor and against this notion.

Simply loading the file asynchronously may not resolve the issue, as it still involves making an http request - similar to how AJAX functions by retrieving information from the server without refreshing the page.

If the JavaScript code is minimal, consider directly including it in your .html file instead.

Additionally, the description of the problem you're facing is somewhat vague. Can you provide more details for better understanding?

What is the best way to asynchronously load an external javascript file in a popup.html file?

Answer №1

Answer №2

Answer №3

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