same-origin-policy Archives

SecurityError: Blocked a frame with origin from accessing a cross-origin frame

I am loading an <iframe> in my HTML page and trying to access the elements within it using Javascript, but when I try ...

April 26, 2022
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How can I access the contents of an iframe with JavaScript/jQuery?

I would like to manipulate the HTML inside an iframe using jQuery. I thought I’d be able to do this by setting the ...

April 20, 2022
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Why does my JavaScript code receive a “No ‘Access-Control-Allow-Origin’ header is present on the requested resource” error, while Postman does not?

Mod note: This question is about why XMLHttpRequest/fetch/etc. on the browser are subject to the Same Access Policy restrictions (you get errors mentioning ...

April 10, 2022
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