Error running javascript fetch in Chrome devtools console

Question

According to this SO post I should be able to run a fetch request from Chrome devtools console. In fact, if I click the button in the post answer, it works.

However, if I try to execute the very same code in the console, it doesn't work.

fetch('https://jsonplaceholder.typicode.com/posts/1')
  .then(res => res.json())
  .then(console.log)

What's missing?

May be internet connection. Search https://jsonplaceholder.typicode.com/posts/1 in browser search bar and validate the response — brk
– brk, Commented Jul 20, 2021 at 2:34
I can't reproduce this-- I'm able to run this from my console and get a response. You may probably need to provide more context/information... — Alexander Nied
– Alexander Nied, Commented Jul 20, 2021 at 2:35
@AlexanderNied There is no context. I am just doing what in the picture — Franco Tiveron
– Franco Tiveron, Commented Jul 20, 2021 at 2:40
Are you behind a VPN? Are you on an enterprise machine that might have security software installed? What site are you on when you are running this in the console? Is this Windows, MacOs, or Ubuntu? Do you have any browser plugins installed, perhaps any specific to the devtools? I'm just looking for anything that could be causing this because I cannot reproduce the issue. — Alexander Nied
– Alexander Nied, Commented Jul 20, 2021 at 2:43

Franco Tiveron · Accepted Answer · 2021-07-20 02:56:27Z

6

Don't know why, however it depends on the current domain the browser is:

Home page:

After browsing a page (whatever page):

My guess would be that in the first case there is not an established source domain, but a better error description would help.

answered Jul 20, 2021 at 2:56

Franco Tiveron

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2 Comments

xiº Over a year ago

Lol nice hint. Somehow it resolves problem

Richard Green Over a year ago

Thanks, this solved my issue. If I had to guess it is to do with https. When no website is open it is effectively making https request from a non-https website hence it gets rejected

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