Document: beforescriptexecute event

{{APIRef("DOM")}} {{non-standard_header}} {{deprecated_header}} 

The beforescriptexecute event fires when a static {{HTMLElement("script")}}  is about to start executing. It does not fire if the element is added dynamically, such as with {{domxref("Node.appendChild()", "appendChild()")}} .

Syntax

Use the event name in methods like {{domxref("EventTarget.addEventListener", "addEventListener()")}} , or set an event handler property.

addEventListener("beforescriptexecute", (event) => { })

onbeforescriptexecute = (event) => { }

Event type

A generic {{domxref("Event")}} .

Examples

function starting(e) {
  logMessage(`Starting script with ID: ${e.target.id}`);
}

document.addEventListener("beforescriptexecute", starting);
// or
document.onbeforescriptexecute = starting;

View Live Example

Specifications

Not part of any specification.

Browser compatibility

{{Compat}} 

See also

• {{domxref("Document.afterscriptexecute_event", "afterscriptexecute")}}  event of Document
• {{domxref("Document.currentScript")}}