Kevin Powell - Community•2mo ago

Uncaught (in promise) Error: A listener indicated an asynchronous response by returning true. . .

Uncaught (in promise) Error: A listener indicated an asynchronous response by returning true, but the message channel closed before a response was received Hello guys, sorry to disturb you all, can someone explain what this error is all about please, I didn't understand why I obtain this error, here is my script:

const textBox = document.querySelector('#textBox');

textBox.addEventListener('keydown', (event) => {
    console.log(`you pressed: ${event.key}`);
})

const textBox = document.querySelector('#textBox');

textBox.addEventListener('keydown', (event) => {
    console.log(`you pressed: ${event.key}`);
})

21 Replies

MarkBoots•2mo ago

this bit doesn't seem to have any issues, think something else is interacting with it. are you using a framework or just vanilla j? It could also be a browser extension that interferes can you recreate the problem in a codepen?

FakerOP•2mo ago

hmm vanilla js, yeah wait

FakerOP•2mo ago

https://codepen.io/Fakeur/pen/BaXVYYY here is the link

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FakerOP•2mo ago

hmm browser extension, like a extension downloaded from google library for eg?

MarkBoots•2mo ago

for me it seems to just work. What device/browser do you use?

FakerOP•2mo ago

I'm using google chrome

MarkBoots•2mo ago

i tested in chrome, edge and firefox on windows (the 'meta' was my windows key to screengrab)

FakerOP•2mo ago

hmm strange, it's not the first time I'm having this error, the code works but I get this error

MarkBoots•2mo ago

can you screenshot the error from the devtools console

FakerOP•2mo ago

yep wait

snxxwyy•2mo ago

Perhaps it’s something to do with not having defer applied?

MarkBoots•2mo ago

then it wouldnt find the element to attach the eventlistener too, but that doesnt seem to be the issue

FakerOP•2mo ago

hmm I didn't obtain the error this time but I guess you were right when you said that may be browser extensions were inferering, I believe the grammerly browser extension can intefere

MarkBoots•2mo ago

grammerly is an extenstion I suppose, yes

ἔρως•2mo ago

https://www.grammarly.com/ grammarly was a good extension to help fix grammar issues that's probably what's causing the error just check the path of the grammarly.js file path, by clicking on it

FakerOP•2mo ago

hmm here is what I obtain when I click on one of the link

FakerOP•2mo ago

ἔρως•2mo ago

that's not being included by codepen, so try to disable grammarly and see if it still happens

FakerOP•2mo ago

yeah the problem was with the extension

ἔρως•2mo ago

maybe they will fix it at some point

FakerOP•2mo ago

ok ok ty !!

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Uncaught (in promise) Error: A listener indicated an asynchronous response by returning true. . .