Are there any restrictions on Google iframes?

Common restrictions include same-origin policy, security restrictions, size restrictions, cookie restrictions, etc. Detailed introduction: 1. Same-origin policy: Google’s iframe follows the same-origin policy, that is, it can only load content with the same protocol, domain name, and port as the parent page. This means that if the domain name of the parent page is inconsistent with the domain name of the content in the iframe, the iframe will not be able to load; 2. Security restrictions: For example, the DOM elements of the parent page cannot be accessed through the iframe, and certain sensitive operations cannot be performed in the iframe; 3. Size restrictions, etc.

Operating system for this tutorial: Windows 10 system, Dell G3 computer.

Google's iframe has some restrictions, these restrictions are mainly to protect the security and privacy of users. Here are some common restrictions:

1. Same-origin policy: Google’s iframes follow the same-origin policy, which means they can only load content with the same protocol, domain name, and port as the parent page. This means that if the domain name of the parent page does not match the domain name of the content in the iframe, the iframe will not load.

2. Security limitations: Google's iframe has some security limitations, such as the inability to access the DOM elements of the parent page through the iframe, and the inability to perform certain sensitive operations in the iframe (such as popping up new window).

3. Size restrictions: Google's iframes have some size restrictions. For example, by default, the height of the iframe will automatically adjust according to the content, but the maximum height is usually limited by the browser or the parent page.

4. Cookie restriction: Google's iframe cannot share the cookie of the parent page by default, which means that the cookie of the parent page cannot be accessed in the iframe, and the cookie of the parent page cannot be set through the iframe. .

It should be noted that these restrictions may vary depending on the version and configuration of Google Chrome.

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