Files
linguist/samples/CoffeeScript/browser.coffee
2012-07-23 15:52:49 -05:00

56 lines
1.8 KiB
CoffeeScript

# Override exported methods for non-Node.js engines.
CoffeeScript = require './coffee-script'
CoffeeScript.require = require
# Use standard JavaScript `eval` to eval code.
CoffeeScript.eval = (code, options = {}) ->
options.bare ?= on
eval CoffeeScript.compile code, options
# Running code does not provide access to this scope.
CoffeeScript.run = (code, options = {}) ->
options.bare = on
Function(CoffeeScript.compile code, options)()
# If we're not in a browser environment, we're finished with the public API.
return unless window?
# Load a remote script from the current domain via XHR.
CoffeeScript.load = (url, callback) ->
xhr = new (window.ActiveXObject or XMLHttpRequest)('Microsoft.XMLHTTP')
xhr.open 'GET', url, true
xhr.overrideMimeType 'text/plain' if 'overrideMimeType' of xhr
xhr.onreadystatechange = ->
if xhr.readyState is 4
if xhr.status in [0, 200]
CoffeeScript.run xhr.responseText
else
throw new Error "Could not load #{url}"
callback() if callback
xhr.send null
# Activate CoffeeScript in the browser by having it compile and evaluate
# all script tags with a content-type of `text/coffeescript`.
# This happens on page load.
runScripts = ->
scripts = document.getElementsByTagName 'script'
coffees = (s for s in scripts when s.type is 'text/coffeescript')
index = 0
length = coffees.length
do execute = ->
script = coffees[index++]
if script?.type is 'text/coffeescript'
if script.src
CoffeeScript.load script.src, execute
else
CoffeeScript.run script.innerHTML
execute()
null
# Listen for window load, both in browsers and in IE.
if window.addEventListener
addEventListener 'DOMContentLoaded', runScripts, no
else
attachEvent 'onload', runScripts