Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
 The Document.onafterscriptexecute property references a function that fires when a static <script> element finishes executing its script. It does not fire if the element is added dynamically, such as with appendChild(). 
document.onafterscriptexecute = funcRef;
 funcRef is a function reference, called when the event is fired. The event's target attribute is set to the <script> element that just finished executing. 
function finished(e) { logMessage(`Finished script with ID: ${e.target.id}`); } document.addEventListener('afterscriptexecute', finished, true);
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
onafterscriptexecute | 
No  | 
No  | 
9  | 
No  | 
No  | 
No  | 
No  | 
No  | 
9  | 
No  | 
No  | 
No  | 
    © 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
    https://developer.mozilla.org/en-US/docs/Web/API/Document/onafterscriptexecute