What is the use of iframe in dw

The role of iframe in dw is to embed other web pages, split pages, load external content and secure isolation. Detailed introduction: 1. Embed other web pages, embed the content of other web pages in a web page, so that multiple different web pages can be displayed on the same page; 2. Split the page, by dividing the web page into multiple iframes, each If iframe displays different content, it can achieve the effect of displaying multiple contents on one page at the same time; 3. Load external content, etc.

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

In web development, iframe (inline frame) is an HTML element used to embed other web pages or documents in a web page. It can display the content of another web page in a web page, similar to creating a small window in a web page. This small window can load different web pages, thereby displaying multiple contents on one web page at the same time.

So, why do we need to use iframe? iframe has the following main uses:

1. Embedding in other web pages: The most common scenario of using iframe is embedding into other web pages. By using iframe, we can embed the content of other web pages in a web page, so that multiple different web pages can be displayed on the same page. This is very common in some news websites or blogs, which can embed external content directly into their own web pages.

2. Split pages: Sometimes, we want to split a web page into multiple parts, each part showing different content. This can be achieved using an iframe. By dividing the web page into multiple iframes, each iframe displays different content, you can achieve the effect of displaying multiple content on one page at the same time. This is very useful for some complex web page layouts or multimedia applications.

3. Loading external content: Sometimes, we need to load some external content in the web page, such as advertisements, maps, videos, etc. This function can be easily achieved using iframe. By embedding external content into an iframe, we can load and display this content in a web page without leaving the current page.

4. Security isolation: Since an iframe is an independent window, it can provide a certain degree of security isolation. By using iframes, we can isolate some untrusted content or third-party applications in an independent environment, thereby reducing the impact on the main page. This is useful in situations where external content or third-party applications need to be loaded, and can improve the security of the web page.

In summary, iframe is a very useful HTML element that can embed other web pages or documents in a web page. It can display multiple contents in a web page at the same time, split pages, load external content, and provide security isolation functions. Whether in news websites, blogs, complex web page layouts or multimedia applications, using iframes can help us achieve richer and more flexible web page effects. .

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