completed challenge

js/script.js

@@ -1,5 +1,3 @@
-
-
 /** 
  *  RAP NAME GENERATOR
  *  The user will insert their first name and on click receive one of several
@@ -12,21 +10,55 @@
  *       "Inspectah J"
  **/
 
-function Generator() {
-
-    /* Name Arrays: Customize names to change possible output */
-    this.last_names = ['the Chef', 'Digital', 'Wise', 'Knight', 'Wrecka', 'the Genius', 'the Zoo Keeper', 'the Monk', 'the Scientist', 'the Disciple', 'the Darkman', 'Pellegrino', 'the Ill Figure', 'Rocks The World', 'the Baptist',];
-    this.first_names = ['Inspectah', 'Masta', 'Poppa', 'Five Foot', 'Ghostface', 'Old Dirty'];
+// add a .sample() function to our array objects
+Array.prototype.sample = function() {
+  // returns a random element from the array
+  return this[Math.floor(Math.random() * this.length)];
+}
 
+function Generator() {
+  /* Name Arrays: Customize names to change possible output */
+  this.last_names  = ['the Chef', 'Digital', 'Wise', 'Knight', 'Wrecka', 
+                      'the Genius', 'the Zoo Keeper', 'the Monk', 
+                      'the Scientist', 'the Disciple', 'the Darkman', 
+                      'Pellegrino', 'the Ill Figure', 'Rocks The World', 
+                      'the Baptist',];
+  this.first_names = ['Inspectah', 'Masta', 'Poppa', 'Five Foot', 'Ghostface',
+                      'Old Dirty'];
 }
 
+Generator.prototype.rapName = function(basicName) {
+  // generate random number between 1 and 2
+  var x = Math.floor((Math.random() * 2) + 1);
 
-//Add your codez here
+  // decide to add first name or last name
+  if (x == 2) {
+    return basicName + " " + this.last_names.sample();
+  } else {
+    return this.first_names.sample() + " " + basicName;
+  }
+};
 
+Generator.prototype.validInput = function(input) {
+  var pattern = /^ *[a-zA-Z]/g;
+  // return true if input contains numbers or is empty
+  return pattern.test(input);
+}
 
 $(document).ready(function() {
+  var engine = new Generator;
 
-    var engine = new Generator;
-    //Add your codez here
+  $('#enter').on('click', function() {
+    var userName = $('#user-input').val();
 
+    // test user input and display rap name or error
+    if (engine.validInput(userName)) {
+      $('.error').hide();
+      $('.response').text(engine.rapName(userName)).show();
+    } else {
+      $('.response').hide();
+      $('.error').show();
+    }
+  });
 });
+