How to load third party scripts dynamically in javascript

loading third-party scripts dynamically in javascript involves creating and inserting script elements into the document at runtime. this approach is useful for optimizing performance, as it allows you to load scripts only when needed, such as in response to user actions or specific conditions.

to start, you can use the document object model (dom) methods to create a new script element. set the `src` attribute of this element to the url of the third-party script you wish to load. optionally, you can specify attributes like `async` or `defer` to control how the script is executed in relation to other scripts.

once the script element is configured, append it to the document's head or body. this triggers the browser to fetch and execute the script. additionally, you can implement callbacks or event listeners to handle the script’s load and error events, ensuring robust error handling and execution flow.
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