Shiny review edits, closes #305

html/shiny.qmd

@@ -35,19 +35,22 @@ Users can manipulate the UI, which will cause the server to update the UI's disp
 Save your template as `app.R`.
 Keep your app in a directory along with optional extra files.
 
-**app-name:** The directory name is the app name
+-   **app-name:** The directory name is the app name
 
+```{=html}
+<!-- -->
+```
 -   **app.R**
 
 -   DESCRIPTION and README: (optional) used in showcase mode
 
--   R/: (optional) directory of supplemental .R files that are sources automatically, must be named `R`
+-   R/: (optional) directory of supplemental .R files that are sourced automatically, must be named `R`
 
--   www/: (optional) directory of giles to share with web browsers (images, CSS, .js, etc.), must be named `www`
+-   www/: (optional) directory of files to share with web browsers (images, CSS, .js, etc.), must be named `www`
 
 Launch apps stored in a directory with `runApp(<path to directory>)`.
 
-To generate the template, type `shinyApp` and press `Tab` in the RStudio IDE or go to **File \> New Project \> New Directory \> Shiny Web Applications**.
+To generate the template, type `shinyApp` and press `Tab` in the RStudio IDE or go to **File \> New Project \> New Directory \> Shiny Application**.
 
 ```{r}
 #| eval: false
@@ -118,7 +121,7 @@ Share your app in three ways:
 : Table of render\*() functions and their associated \*Output() functions.
 
 These are the core output types.
-See [htmlwidgets.org](htmlwidgets.org) for many more options.
+See [htmlwidgets.org](https://www.htmlwidgets.org/) for many more options.
 
 ## Inputs
 
@@ -151,17 +154,14 @@ Input values are **reactive**.
 
 -   `sliderInput(inputId, label, min, max, value, step, round, format, locale, ticks, animate, width, sep, pre, post, timeFormat, timezone, dragRange)`
 
--   `submitButton(text, icon, width)`: Prevent reactions for entire app
-
 -   `textInput(inputId, label, value, width, placeholder)`: Also `textAreaInput()`
 
 <!-- page 2 -->
 
 ## Reactivity
 
 Reactive values work together with reactive functions.
-Call a reactive value from within the arguments of one of these functions to avoid the error.
-**Operation not allowed without an active reactive context.**
+Call a reactive value from within the arguments of one of these functions to avoid the error `Operation not allowed without an active reactive context`**.**
 
 ![](images/reactivity-diagram.png){fig-align="center"}
 
@@ -177,7 +177,6 @@ Call a reactive value from within the arguments of one of these functions to avo
     -   `*Input()`
 -   Perform side effects
     -   `observeEvent()`
-
     -   `observe()`
 -   Schedule updates
     -   `invalidateLater()`
@@ -193,7 +192,7 @@ Call a reactive value from within the arguments of one of these functions to avo
 
 ### Create Your own Reactive Values
 
--   `*Input()` functions: (see front page) Each input function creates a reactive value stored as input\$<inputId>.
+-   `*Input()` functions: Each input function creates a reactive value stored as `input$<inputId>`.
 
     ```{r}
     #| eval: false
@@ -204,12 +203,14 @@ Call a reactive value from within the arguments of one of these functions to avo
     )
     ```
 
--   `reactiveValues(...)`: Creates a list of reactive values whose values you can set.
+-   `reactiveVal():` Creates a single reactive values object.
+
+    `reactiveValues(...)`: Creates a list of reactive values whose values you can set.
 
     ```{r}
     #| eval: false
 
-    #reactiveValues example
+    # reactiveVal example
     server <- function(input,output){
       rv <- reactiveValues() 
       rv$number <- 5
@@ -228,7 +229,7 @@ Call a reactive value from within the arguments of one of these functions to avo
 
         -   notify dependencies when invalidated
 
-    Call the expression with function sytrax, e.g. `re()`.
+    Call the expression with function syntax, e.g. `re()`.
 
     ```{r}
     #| eval: false
@@ -242,7 +243,8 @@ Call a reactive value from within the arguments of one of these functions to avo
 
     server <- function(input,output){
       re <- reactive({ 
-        paste(input$a,input$z)})
+        paste(input$a,input$z)
+      })
       output$b <- renderText({
         re()
       }) 
@@ -268,7 +270,8 @@ Call a reactive value from within the arguments of one of these functions to avo
 
     server <- function(input,output){
       re <- eventReactive(
-        input$go,{input$a})
+        input$go,{input$a}
+      )
       output$b <- renderText({
         re()
       }) 
@@ -303,8 +306,10 @@ Call a reactive value from within the arguments of one of these functions to avo
 
 ### Perform Side Effects
 
+-   `observe(x, env)`: Creates an observer from the given expression.
+
 -   `observeEvent(eventExpr, handlerExpr, event.env, event.quoted, handler.env, handler.quoted, ..., label, suspended, priority, domain, autoDestroy, ignoreNULL, ignoreInit, once)`: Runs code in 2nd argument when reactive values in 1st argument change.
-    See `observe()` for alternative.
+    Alternative to `observe``()`.
 
     ```{r}
     #| eval: false
@@ -461,7 +466,7 @@ Other elements:
 -   `titlePanel()`
 -   `wellPanel()`
 
-Organize panels and elements into a layout with a layour function.
+Organize panels and elements into a layout with a layout function.
 Add elements as arguments of the layout functions.
 
 -   `sidebarLayout()`
@@ -530,7 +535,7 @@ ui <- navbarPage(
 
 ## Themes
 
-Use the **bslib** pacage to add existing themes to your Shiny app ui, or make your own.
+Use the **bslib** package to add existing themes to your Shiny app ui, or make your own.
 
 ```{r}
 #| eval: false