Creating a Conditional "Retrieve Script File" Function in JavaScript Without Dependencies

Question

Creating a Conditional "Retrieve Script File" Function in JavaScript Without Dependencies

At the company where I work, we have numerous clients with their own websites that are connected to our system through a linking mechanism. Essentially, these clients have a link on their website that directs users to our site upon clicking.

I am working on implementing a tracking feature that requires the client to add a small block of code on their homepage. This code will request a file from my server whenever the homepage is loaded with a specific query string variable, allowing me to record tracking information based on the query string.

While it would be simple if all clients used jQuery or a similar library, I cannot assume that they do. Additionally, I want to keep the size of the JavaScript block minimal for ease of implementation.

I believe the ideal solution would involve something like:

if(querystring.substring("Tracking=") > 0)
{
   include("blah.aspx?TrackingQS=" + querystring);
}

However, I have been unable to find an include function in native JavaScript without incorporating a library like jQuery.

Any suggestions?? While I could go for a straightforward AJAX approach, I am aiming to reduce the number of lines of code for various reasons I won't delve into here.

javascript ajax

Answer 1

Answer №1

How to dynamically add a script block

 function includeScript(path) {
     var scriptElement = document.createElement('script'); 
     scriptElement.type = 'text/javascript'
     scriptElement.src = path;
     document.getElementsByTagName('head')[0].appendChild(scriptElement);
 }

To improve this functionality, consider keeping a record of all the paths that have been added to prevent unintentionally loading the same script more than once.

Answer 2

How to dynamically add a script block

 function includeScript(path) {
     var scriptElement = document.createElement('script'); 
     scriptElement.type = 'text/javascript'
     scriptElement.src = path;
     document.getElementsByTagName('head')[0].appendChild(scriptElement);
 }

To improve this functionality, consider keeping a record of all the paths that have been added to prevent unintentionally loading the same script more than once.

Answer 3

Answer №2

The usual method involves including a small 1x1 image element in your code, with the source being blah.aspx.

Answer 4

The usual method involves including a small 1x1 image element in your code, with the source being blah.aspx.

Answer 5

Answer №3

Develop a program that utilizes the included Ajax functions to provide your customers with the following:

<script type="text/javascript" src="customScript.js"></script>

Answer 6

Develop a program that utilizes the included Ajax functions to provide your customers with the following:

<script type="text/javascript" src="customScript.js"></script>

Answer 7

Answer №4

If you provide them with the following code snippet:

<script src="http://www.google.com/jsapi"></script>
<script>
    google.load("jquery", "1.4.1");
    ourJQ = jQuery.noconflict();
    //jQuery code
</script>

It will fetch jQuery from Google, helping to conserve their bandwidth and allowing for the utilization of jQuery.

Answer 8

If you provide them with the following code snippet:

<script src="http://www.google.com/jsapi"></script>
<script>
    google.load("jquery", "1.4.1");
    ourJQ = jQuery.noconflict();
    //jQuery code
</script>

It will fetch jQuery from Google, helping to conserve their bandwidth and allowing for the utilization of jQuery.

Creating a Conditional "Retrieve Script File" Function in JavaScript Without Dependencies

Answer №1

Answer №2

Answer №3

Answer №4

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