How to Load Scripts Synchronously in JavaScript: Why and When?-JS Tutorial-php.cn

How to Load Scripts Synchronously in JavaScript: Why and When?

Synchronous Loading of Script Files Using document.createElement("script")

Loading external scripts asynchronously ensures that page rendering is not blocked while the scripts are being retrieved and parsed. However, there may be use cases where you need to load a script file synchronously and utilize it immediately.

The code snippet attempts to synchronously load a script file and invoke a function from it. However, it encounters a timing issue as the script hasn't yet been loaded and executed when the function is called.

Resolving this issue involves recognizing that loading scripts asynchronously is the standard approach. However, in certain specific scenarios, you may need to control the loading process manually.

Custom Script Loading Function

To improve the script loading process, you could create a custom function that incorporates an "onload" handler to the created