What is an iframe page?

Iframe page is a technology that embeds other HTML documents in HTML documents. It provides greater flexibility and functionality, but it also requires developers to pay extra attention to security and page loading speed. Iframe stands for Inline Frame, which allows one web page to be displayed within another web page. By using iframes, developers can bring content from other pages into one page without leaving the current page.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

Iframe page is a technology that embeds other HTML documents in HTML documents. Iframe stands for Inline Frame, which allows a web page to be displayed within another web page. By using iframes, developers can bring content from other pages into one page without leaving the current page.

Iframe pages can create an independent browsing context in a main page, so that embedded pages can be loaded and rendered independently. This means that content from different servers or different domains can be displayed simultaneously in one web page. This provides developers with greater flexibility and functionality.

Iframe pages have many uses and advantages. The following are some common application scenarios:

Embed content from other websites: By embedding pages from other websites into your own web pages, you can display real-time content from other websites, such as maps, weather, news, etc. This provides users with more information and functionality without leaving the current web page.

Advertising display: Iframe pages can be used to display advertising content. Advertisers can embed advertising content into the Iframe of partner websites to display ads when users visit partner websites.

Split page: By creating multiple Iframes in a page, the page can be divided into multiple independent areas, and each area can load and display different content. This enables complex layouts and interactive effects.

Security isolation: Iframe pages can provide security isolation to prevent malicious scripts from embedded pages from attacking the main page. Because the content within the Iframe runs in a security sandbox, they do not have direct access to the main page's DOM structure and JavaScript objects.

Although Iframe pages have many uses and advantages, there are also some potential problems and challenges:

Security issues: Since Iframes can load content from other domains, there are cross-domain scripting attacks. (Cross-Site Scripting, XSS) risk. Malicious websites can steal users' sensitive information or perform other malicious behaviors through scripts embedded in Iframes. In order to solve this problem, browsers have introduced some cross-domain security policies, such as Same-Origin Policy and Content Security Policy.

Page loading speed: Iframe pages require additional network requests and resource loading, which may cause the page loading speed to slow down. Especially when the content in the Iframe comes from other domains, the browser needs to make cross-domain requests, which will increase the loading time of the page.

Cannot directly access the parent page: The content in the Iframe cannot directly access the DOM structure and JavaScript objects of its parent page. This restriction is intended to protect the security of the page, but may complicate development in some cases.

In summary, the Iframe page is a powerful technology that can embed the content of other web pages in a web page. It provides greater flexibility and functionality, but also requires developers to pay additional attention to security and page load speed issues.

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