Dan Meehan Solution

validator.coffee

@@ -0,0 +1,40 @@
+class Test
+  constructor: (@sel, @func, @errMsg) ->
+
+  run: -> if @func $(@sel).val() then null else @errMsg
+
+class Validator
+  constructor: (@errList) ->
+    @tests = []
+
+  addTest: (t) ->
+    @tests.push t
+
+  check: ->
+    $(@errList).empty()
+    valid = true
+    for t in @tests
+      error = t.run()
+      if error != null
+        $(@errList).append '<li>' + error + '</li>'
+        valid = false
+    valid
+
+emailRegex = /^([a-zA-Z0-9!#$%&'*\+\-\/=?^_`{|}~]+(?:\.*[a-zA-Z0-9!#$%&'*\+\-\/=?^_`{|}~]+)*)@([a-zA-Z0-9\-]+(?:\.[a-zA-Z0-9\-]+)+)$/
+upperCaseRegex = /.*[A-Z]+.*/
+digitRegex = /.*[0-9]+.*/
+
+v = new Validator 'ul.errors'
+v.addTest new Test 'input[type=text]', ((s) -> emailRegex.test s), 'Please enter a valid email address'
+v.addTest new Test 'input[type=password]', ((s) -> s.length >= 8), 'Your password should be at least 8 characters long'
+v.addTest new Test 'input[type=password]', ((s) -> upperCaseRegex.test s), 'Your password should contain at least one capital letter'
+v.addTest new Test 'input[type=password]', ((s) -> digitRegex.test s), 'Your password should contain at least one number (0-9)'
+
+$('ul.errors').empty()
+$('input[type=submit]').click (e) ->
+  if not v.check()
+    e.preventDefault()
+  else
+    $('form').submit()
+    alert 'Sign in successful!'
+  null