How Do I Add The Crossorigin Tag To A Dynamically Loaded Script

Adding the crossorigin tag to a dynamically loaded script is crucial for ensuring that your web application runs smoothly while following security protocols. In this article, we will guide you through the steps to add the crossorigin tag effectively.

Firstly, let's understand the purpose of the crossorigin attribute. When a script is loaded cross-origin (from a different domain), the browser enforces security measures to prevent certain types of attacks. By adding the crossorigin attribute to your script tag, you are signaling to the browser that the script can be trusted and should be allowed to execute.

To add the crossorigin attribute to a dynamically loaded script, follow these steps:

1. Create a new script element: Before you can add the crossorigin attribute, you need to create a new script element in your HTML document. You can do this using JavaScript by creating a new script element with the document.createElement method.

var script = document.createElement('script');

2. Set the source of the script: Once you have created the script element, you need to set the source (src) attribute to the URL from which you are loading the script. This is where you specify the external script's location.

script.src = 'https://example.com/script.js';

3. Add the crossorigin attribute: To add the crossorigin attribute, you can use the setAttribute method on the script element. Set the value of the crossorigin attribute to 'anonymous' or 'use-credentials' depending on your specific requirements.

script.setAttribute('crossorigin', 'anonymous');

4. Append the script to the document: Finally, you need to append the script element to the HTML document's head or body to start the loading process and execute the script.

document.head.appendChild(script); // or document.body.appendChild(script);

By following these steps, you have successfully added the crossorigin attribute to a dynamically loaded script. Remember, using the crossorigin attribute is essential when loading scripts from external sources to maintain a secure and reliable web application.

In conclusion, ensuring that your dynamically loaded scripts include the necessary security attributes like crossorigin is a vital part of web development. By following the steps outlined in this article, you can enhance the security and performance of your web application while dynamically loading scripts from external sources.