loadScript
loadScript is a common programming pattern used to dynamically insert JavaScript files into a web document at runtime. The function typically creates a <script> element, sets its source attribute to the desired URL, and appends the element to the <head> or <body> of the page. By doing so, scripts can be loaded on demand instead of being bundled into the initial page load, which can improve performance and allow conditional feature loading.
While implementations vary, a typical loadScript function takes the script URL as its first argument and an
LoadScript is useful for integrating third‑party libraries, analytics tags, or feature‑specific code in applications that require
Compatibility issues are minimal for modern browsers; older Internet Explorer versions required handling the onreadystatechange event