What is the difference between page layer and iframe layer?

The difference between the page layer and the iframe layer: 1. The page layer refers to an independent area in the web page, including HTML, CSS and JavaScript code, while the iframe layer is an HTML element; 2. The page layer is Defined directly in the web page, you can directly access and operate other elements and objects in the web page. The iframe layer is an independent HTML document that communicates with the web page containing it through JS code; 3. The page layer loads and renders faster. Fast, while the iframe layer is slower to load and render, etc.

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

Page layer and iframe layer are two technologies commonly used in web development. They have some differences in realizing web page layout and functions.

The page layer refers to an independent area in the web page and can contain HTML, CSS and JavaScript code. Page layers are usually defined through div elements, and their position, size and style can be controlled through CSS styles. The page layer can be used to implement the layout and design of web pages, as well as add interactive and dynamic effects.

Different from the page layer, the iframe layer is an HTML element used to embed another web page within a web page. By using the iframe tag, you can display the content of another web page within a web page. The iframe layer can specify a URL that points to the web page to be embedded. The iframe layer can be used to nest and split web pages, as well as display content from other websites in web pages.

In terms of functionality, there are also some differences between the page layer and the iframe layer. The page layer is defined directly in the web page, so other elements and objects in the web page can be directly accessed and manipulated. The page layer can achieve interactive and dynamic effects through JavaScript code, such as showing or hiding an element by clicking a button, or loading and updating data through Ajax technology.

In contrast, the iframe layer is an independent HTML document that is separate from the web page that contains it. Therefore, the iframe layer cannot directly access and manipulate elements and objects in the web page that contains it. If you need to achieve interactive and dynamic effects in the iframe layer, you usually need to communicate with the web page containing it through JavaScript code, such as using the postMessage() method to send messages.

There are also some differences in performance between the page layer and the iframe layer. Because the page layer is defined directly in the web page, it loads and renders faster. The iframe layer needs to load and render another web page, thus increasing the loading time and network requests of the web page. When using the iframe layer, you need to pay attention to controlling the size and content of the embedded web page to avoid affecting the overall web page performance and user experience.

To sum up, the page layer and iframe layer have different uses and characteristics in web development. The page layer is used to implement the layout and design of web pages, as well as add interactive and dynamic effects; while the iframe layer is used to embed the content of another web page in a web page. When developers choose to use the page layer or the iframe layer, they need to make choices and trade-offs based on specific needs and scenarios.

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