控制小部件

Created: November-22, 2018

功能	視窗小部件
`actionButton`	動作按鈕
`checkboxGroupInput`	一組核取方塊
`checkboxInput`	一個核取方塊
`dateInput`	幫助選擇日期的日曆
`dateRangeInput`	用於選擇日期範圍的一對日曆
`FileInput`	檔案上載控制嚮導
幫助檔案	可以新增到輸入表單的幫助文字
`numericInput`	輸入數字的欄位
單選按鈕	一組單選按鈕
`selectInput`	一個可供選擇的框
`sliderInput`	一個滑塊
提交按鈕	提交按鈕
為 textInput	輸入文字的欄位

library(shiny)

# Create the UI
ui <- shinyUI(fluidPage(
  titlePanel("Basic widgets"),
  
  fluidRow(
    
    column(3,
           h3("Buttons"),
           actionButton("action", label = "Action"),
           br(),
           br(), 
           submitButton("Submit")),
    
    column(3,
           h3("Single checkbox"),
           checkboxInput("checkbox", label = "Choice A", value = TRUE)),
    
    column(3, 
           checkboxGroupInput("checkGroup", 
                              label = h3("Checkbox group"), 
                              choices = list("Choice 1" = 1, 
                                             "Choice 2" = 2, "Choice 3" = 3),
                              selected = 1)),
    
    column(3, 
           dateInput("date", 
                     label = h3("Date input"), 
                     value = "2014-01-01"))   
  ),
  
  fluidRow(
    
    column(3,
           dateRangeInput("dates", label = h3("Date range"))),
    
    column(3,
           fileInput("file", label = h3("File input"))),
    
    column(3, 
           h3("Help text"),
           helpText("Note: help text isn't a true widget,", 
                    "but it provides an easy way to add text to",
                    "accompany other widgets.")),
    
    column(3, 
           numericInput("num", 
                        label = h3("Numeric input"), 
                        value = 1))   
  ),
  
  fluidRow(
    
    column(3,
           radioButtons("radio", label = h3("Radio buttons"),
                        choices = list("Choice 1" = 1, "Choice 2" = 2,
                                       "Choice 3" = 3),selected = 1)),
    
    column(3,
           selectInput("select", label = h3("Select box"), 
                       choices = list("Choice 1" = 1, "Choice 2" = 2,
                                      "Choice 3" = 3), selected = 1)),
    
    column(3, 
           sliderInput("slider1", label = h3("Sliders"),
                       min = 0, max = 100, value = 50),
           sliderInput("slider2", "",
                       min = 0, max = 100, value = c(25, 75))
    ),
    
    column(3, 
           textInput("text", label = h3("Text input"), 
                     value = "Enter text..."))   
  )
  
))

# Create the server function
server <- shinyServer(function(input, output){})

# Run the app
shinyApp(ui = ui, server = server)