script outside of the html #137

valentinedwv · 2023-02-04T21:06:09Z

valentinedwv
Feb 4, 2023

We have a page where the script is outside of the HTML

<html>
<head>
</head>
<body></body>
</html>
<script></script>

Best shown on the validator.schema.org

In chrome developers tools pane in the chrome browser, the script is move into the head.

<html>
<head>
<script></script>
</head>
<body></body>
</html>

Is it possible to do this in the cdp tooling?

Answered by valentinedwv

Feb 4, 2023

actually, it looks like the javascript code should be rendering to the head, but when using go library, the element is not found there.

    h.type = "application/ld+json",
        g = f.trustAsHtml(e("json")(g)),
        h.text = g,
        document.querySelector("head").appendChild(h)

Using LoadEventFired does let the script load into the head.

View full answer

valentinedwv · 2023-02-04T21:19:26Z

valentinedwv
Feb 4, 2023
Author

actually, it looks like the javascript code should be rendering to the head, but when using go library, the element is not found there.

    h.type = "application/ld+json",
        g = f.trustAsHtml(e("json")(g)),
        h.text = g,
        document.querySelector("head").appendChild(h)

Using LoadEventFired does let the script load into the head.

4 replies

mafredri Feb 5, 2023
Maintainer

Hi, are you using this Go library or just Chrome DevTools Protocol in general? If you are trying to achieve this with the Go library, could you give a code sample of what you tried to do that didn’t work?

If it’s not related to this Go library, I’m afraid I can’t provide any assistance.

valentinedwv Feb 5, 2023
Author

Yes, using the go library, code is here

Should we wait longer after the domContent.Recv() event? or is there a way to wait for the page rendered?

mafredri Feb 11, 2023
Maintainer

Hey @valentinedwv, I'm in the middle of moving so my responses are pretty slow, sorry about that.

Thanks for sharing the code, I don't really see a reason it shouldn't work, but instead of (or in addition to) using DOMContentEventFired, have you considered waiting until LoadEventFired? It sounds more suitable for your purpose: https://developer.mozilla.org/en-US/docs/Web/API/Window/load_event.

Another option may be to enable lifecycle events and check if they provide anything useful: https://pkg.go.dev/github.com/mafredri/cdp@v0.33.0/protocol/page#LifecycleEventClient

valentinedwv Feb 13, 2023
Author

Thanks. Yes, looks like LoadEventFired works.

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script outside of the html #137

valentinedwv Feb 4, 2023

Replies: 1 comment · 4 replies

valentinedwv Feb 4, 2023 Author

mafredri Feb 5, 2023 Maintainer

valentinedwv Feb 5, 2023 Author

mafredri Feb 11, 2023 Maintainer

valentinedwv Feb 13, 2023 Author

valentinedwv
Feb 4, 2023

Replies: 1 comment 4 replies

valentinedwv
Feb 4, 2023
Author

mafredri Feb 5, 2023
Maintainer

valentinedwv Feb 5, 2023
Author

mafredri Feb 11, 2023
Maintainer

valentinedwv Feb 13, 2023
Author