Create URL hyperlink in R Shiny?

Question

My code:

library(shiny)
runApp(
  list(ui = fluidPage(
     uiOutput("tab")
    ),
  server = function(input, output, session){
    url <- a("Google Homepage", href="https://www.google.com/")
    output$tab <- renderUI({
      paste("URL link:", url)
    })
  })
)

Current output:

URL link: <a href="https://www.google.com/">Google Homepage</a>

Desired output:

URL link: Google Homepage

where Google Homepage is a clickable hyperlink.

I'm currently using the renderUI/uiOutput duo as instructed here: how to create a hyperlink interactively in shiny app?

DeanAttali · Accepted Answer · 2017-02-05 05:44:53Z

58

By using paste, you're treating the url as a string. The function you want to use here is tagList:

runApp(
  list(ui = fluidPage(
     uiOutput("tab")
    ),
  server = function(input, output, session){
    url <- a("Google Homepage", href="https://www.google.com/")
    output$tab <- renderUI({
      tagList("URL link:", url)
    })
  })
)

answered Feb 5, 2017 at 5:44

DeanAttali

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1 Comment

Lazarus Thurston Over a year ago

How to ensure the url link is opened inside the SHiny app and not a new tab?

symkly · Accepted Answer · 2020-02-11 08:33:45Z

35

You can use html tags whatever you want to tag

    tags$a(href="www.rstudio.com", "Click here!")
## <a href="www.rstudio.com">Click here!</a>

edited Feb 11, 2020 at 8:33

answered Feb 8, 2020 at 11:40

symkly

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2 Comments

entropy Over a year ago

Also, to open it in a new browser, adding target="_blank" as argument.

Angelo Over a year ago

would you know how to change the font size if we use your tags$a solution? Thanks

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