Race Conditions:	Normal Script Src XHR Eval XHR Injection Script in Iframe Script DOM Element Script Defer document.write Script Tag
Single script:	Hardcoded Callback Window Onload Timer Script Onload Degrading Script Tags
Multiple scripts:	Managed XHR DOM Element and Doc Write
General solution:	loadScript loadScripts Same Domain loadScripts Diff Domain YUI Loader

YUI Loader

Examples ▼

Was the script loaded without blocking?
Was execution order preserved?

This page contains an external script and some inlined code. The external script is loaded asynchronously (using the Script DOM Element technique). The inlined code's init function calls scriptAFunc, a function defined in the external script. Because of this dependency, the inlined code must be coupled with the external script so that the execution order is preserved: the external script is loaded, parsed, and executed before the inlined code.

In this example...