I have a function main which contains a promise but does not return one. Something like this.
function main() {
var prom = new Promise(function(resolve, reject) {
setTimeout(() => {
console.log("testing");
reject();
}, 2000);
});
return "success";
}
main();When I run the code, it gives an Uncaught (in promise) DOMException and stops the javascript code. I can't modify the main function at all. How can I catch the rejection?
You can listen for the "unhandledrejection" event.
window.addEventListener("unhandledrejection", e => {
e.preventDefault(); // prevent error message
// handle...
// e.promise is the Promise that was rejected
// e.reason is the object passed to reject()
});