Hank Playground

Experiment with Hank syntax and the standard library directly in your browser.

How to use

1. Enter your Hank script in the editor above.
2. Click Run Task to execute.
3. View the results in the Output terminal.

Example: Logic and Math

() {
  score = 85
  ? math_gt(score, 90) {
    log_print("Grade: A")
  } : {
    log_print("Grade: B or lower")
  }
}

Example: Data Manipulation

() {
  fruits = ["apple", "banana"]
  arr_push(fruits, "cherry")
  
  arr_each(fruits, (item, i) {
    log_print(str_format("%1: %2", i, item))
  })
}

Example: Browser-Specific Tasks

This example uses the browser module, which is only available in the BrowserRunner.

() {
  msg = "Hello from the browser!"
  
  // This prints to the playground's internal output
  log_print(msg)
  
  // This prints to your browser's Developer Console (F12)
  browser_log(msg)
  
  // This triggers a native browser alert
  browser_alert(msg)
}

Example: Virtual File System (VFS)

The Playground includes a virtual filesystem. You can define multiple files in the Virtual Files tab and include them in your main script using the @ macro.

By default, an add_ten file is provided that adds 10 to its argument.

@ "add_ten"
() {
  // The @ macro above binds the task defined in 'add_ten.hank'
  // to the 'add_ten' identifier in this scope.
  result = add_ten(5)
  
  log_print(str_format("Result from VFS: %1", result))
}