Correct and extendible form in coffeescript

validator.coffee

@@ -0,0 +1,54 @@
+error_display = (el) -> el.css('display', 'auto')
+error_hide = (el) -> el.css('display', 'none')
+
+form = $('form[name="sign_in"]')
+email_field = form.children().eq(0)
+pwd_field = form.children().eq(2)
+submit_button = $('input[type="submit"]')
+
+error_list = $('.errors').children()
+
+error_hide error_list
+
+
+$( ->
+  form.submit( ->
+
+    email = email_field.val()
+    pwd = pwd_field.val()
+    email_regex = /^[-a-z0-9~!$%^&*_=+}{\'?]+(\.[-a-z0-9~!$%^&*_=+}{\'?]+)*@([a-z0-9_][-a-z0-9_]*(\.[-a-z0-9_]+)*\.(aero|arpa|biz|com|coop|edu|gov|info|int|mil|museum|name|net|org|pro|travel|mobi|[a-z][a-z])|([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}))(:[0-9]{1,5})?$/i
+    conditions = [
+      {
+        condition: (email.match email_regex) != null
+        error_no: 0
+      }, {
+        condition: pwd.length >= 8
+        error_no: 1
+      }, {
+        condition: (pwd.match /[A-Z]/) != null
+        error_no: 2
+      }, {
+        condition: (pwd.match /\d/) != null
+        error_no: 3
+      }
+    ]
+
+    console.log conditions
+
+    (error_hide error_list.eq(x.error_no)) for x in conditions
+    (
+      if x.condition
+        error_hide error_list.eq(x.error_no)
+      else
+        error_display error_list.eq(x.error_no)
+    ) for x in conditions
+
+    if conditions.every((el) -> el.condition == true)
+      alert "Success"
+
+  )
+  true
+
+
+
+)