html网页嵌入shiny,Shiny - Build your entire UI with HTML-优快云博客

这篇博客介绍了如何在Shiny应用中直接使用HTML来定义用户界面，从而实现更灵活的界面定制。通过HTML、CSS和JavaScript，可以创建高度自定义的用户交互体验。示例中展示了如何将Tabsets应用的前端用HTML重构，并提供了服务器脚本的保持不变的信息。

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The HTML UI application demonstrates defining a Shiny user interface using a standard HTML page rather than a UI object. To run the example type:

library(shiny)runExample("08_html")

Defining an HTML UI

Many Shiny apps use a UI object file to build their user interfaces. While this is a fast and convenient way to build user interfaces, some applications will inevitably require more flexiblity. For this type of application, you can define your user interface directly in HTML. For such apps, the directory structure looks like this:

|-- app.R

|-- www

|-- index.html

In this example we re-write the front-end of the Tabsets application (runExample("06_tabsets")) using HTML directly. Here is the source code for the new user interface definition:

www/index.html

HTML UI

Distribution type:

Normal

Uniform

Log-normal

Exponential

Number of observations:

Summary of data:

Plot of data:

style="width: 100%; height: 300px">

Head of data:

There are few things to point out regarding how Shiny binds HTML elements back to inputs and outputs:

HTML form elements (in this case a select list and a number input) are bound to input slots using their name attribute.

Output is rendered into HTML elements based on matching their id attribute to an output slot and by specifying the requisite css class for the element (in this case either shiny-text-output, shiny-plot-output, or shiny-html-output).

With this technique you can create highly customized user interfaces using whatever HTML, CSS, and JavaScript you like.

Server function

All of the changes from the original Tabsets application were to the user interface, the server script remains the same:

# Define server logic for random distribution app ----server

Building the Shiny app object

We end the app.R file with a call to the shinyApp function to build the Shiny app object using the UI and server components we defined above.

shinyApp(ui=htmlTemplate("www/index.html"),server)

Learn more

For more on this topic, see the following resources: