Why use iframe

The reason why iframe is still used is that although some people think that iframe is outdated, it still has some specific application scenarios and advantages, making it still a useful tool in some situations. By embedding external content, segmenting web page content and enabling cross-domain communication, iframes can provide web pages with richer functionality and more flexible layouts.

The operating environment of this tutorial: Windows 10 system, Dell G3 computer.

In modern web design and development, iframe (inline frame) is a common technology used to embed a web page within another web page. Although some consider iframes obsolete, they still have specific use cases and advantages that make them still a useful tool in certain situations.

First of all, iframe can be used to embed content from other websites. This is useful for displaying external content such as maps, social media plugins, videos, etc. By using iframes, websites can easily embed this external content into their own pages, providing users with a richer experience.

Secondly, iframe can be used to split web content. By dividing the web page into different areas and embedding different iframes in each area, more flexible layout and design can be achieved. This is very useful for complex web page structures and multiple independent modules, so that each module can be loaded and updated independently, improving the performance and maintainability of the web page.

In addition, iframe can also be used to achieve cross-domain communication. Due to the browser's same-origin policy restrictions, web pages can only communicate with resources under the same domain name. However, by using iframes, it is possible to communicate between web pages under different domain names. This is very useful for some specific application scenarios, such as single sign-on, cross-domain data sharing, etc.

Of course, although iframes have some advantages, they also have some disadvantages and potential problems. First, since the content in the iframe is loaded independently, it may cause the web page to load slower. In addition, since the content in the iframe comes from different domain names, it may cause security issues, such as cross-site scripting attacks (XSS) and click hijacking. Therefore, when using iframes, developers need to pay attention to security and take appropriate protective measures.

To summarize, although some people think that iframe is outdated, it still has some specific application scenarios and advantages that make it still a useful tool in certain situations. By embedding external content, segmenting web page content and enabling cross-domain communication, iframes can provide web pages with richer functionality and more flexible layouts. However, developers need to be aware of security and performance issues when using iframes.

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