---
title: "Introduction to flashCard"
author: "Jiena Gu McLellan"
date: "`r Sys.Date()`"
output: rmarkdown::html_vignette
vignette: >
  %\VignetteIndexEntry{Introduction to flashCard}
  %\VignetteEngine{knitr::rmarkdown}
  %\VignetteEncoding{UTF-8}
---

```{r setup, include = FALSE}
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)
```

This is package is to create a flash card for Shiny application with desired data.frame. 

## Introduction

Simply create a data frame with `front` column and `back` column. Then put this data frame into `flashCard()` function, we will get a nice flash card. 

```{r ex1}
library(flashCard)
df1 <- data.frame(
  front = c("Title front","contentfront", "content second line"),
  back =c("Title back","content back", "second line")
)
flashCard(df1, elementId = "card", front_text_color = "white")
```

.
