I'm trying to make a backup script but it doesn't want to register the onabort nor abort events. When I purposefully mess up my src link to make the onabort callback run it doesn't work.

document.getElementById("test").addEventListener('onabort',() =>{
            prompt('works:${y}')
        })   
        document.getElementById("test").src="linol.js"

 <script id="test" ></script>

CodePudding user response：

Event onabort is only for media elements. You're looking for onerror, which fires when a script fails to load:

<script id="test" src="wae7r8456fs4786f5hdummynothingnope