All functions of the echarts4r package start with e_, and all its Shiny proxies end with _p. All echarts4r plots are initialised with e_charts.

Your first plots

library(echarts4r) # load echarts4r

mtcars %>% 
  e_charts(wt) %>% # initialise and set x
  e_line(mpg) # add a line

Use the %>% operator to add plots and options.

mtcars %>% 
  e_charts(wt) %>% # initialise
  e_line(mpg) %>% # add line
  e_area(qsec) %>% # add area
  e_x_axis(min = 1) # change x axis minimum

Use one of the 13 built-in themes.

mtcars %>% 
  e_charts(wt) %>% # initialise
  e_line(mpg, smooth = TRUE) %>% # add smooth line
  e_area(qsec, smooth = TRUE) %>% # add area
  e_x_axis(min = 1) %>%  # change x axis minimum
  e_title("Ol' mtcars example") %>%  # Add title
  e_theme("westeros")