102502549

homework/content.js

@@ -1,37 +1,39 @@
 'use strict';
 
-(function() {
-  var _wrapper = document.querySelector('#note-content-wrapper');
+function ContentManager() {
+    this._wrapper = document.querySelector('#note-content-wrapper');
+}
 
-  function start() {
-    window.addEventListener('note-open', function(event) {
-      var note = event.detail;
-      resetWrapper();
-      drawNote(note);
-    });
-  }
+ContentManager.prototype = {
+    start: function () {
+        window.addEventListener('note-open', (function (event) {
+            var note = event.detail;
+            this.resetWrapper();
+            this.drawNote(note);
+        }).bind(this));
+    },
+    resetWrapper: function () {
+        this._wrapper.innerHTML = '';
+    },
+    drawNote: function (note) {
+        var title = note.title;
+        var h = document.createElement('h2');
+        h.textContent = title;
+        var passages = note.passages;
+        var buff = document.createDocumentFragment();
+        passages.forEach(function (passage) {
+            var p = document.createElement('p');
+            p.classList.add('note-passage');
+            p.textContent = passage;
+            buff.appendChild(p);
+        });
+        this._wrapper.appendChild(h);
+        this._wrapper.appendChild(buff);
+    }
+};
 
-  function resetWrapper() {
-    _wrapper.innerHTML = '';
-  }
+var contentManager = new ContentManager();
 
-  function drawNote(note) {
-    var title = note.title;
-    var h = document.createElement('h2');
-    h.textContent = title;
-    var passages = note.passages;
-    var buff = document.createDocumentFragment();
-    passages.forEach(function(passage) {
-      var p = document.createElement('p');
-      p.classList.add('note-passage');
-      p.textContent = passage;
-      buff.appendChild(p);
-    });
-    _wrapper.appendChild(h);
-    _wrapper.appendChild(buff);
-  }
-
-  document.addEventListener('DOMContentLoaded', function(event) {
-    start();
-  });
-})();
+document.addEventListener('DOMContentLoaded', function (event) {
+    contentManager.start();
+});

homework/list.js

@@ -1,79 +1,76 @@
 'use strict';
 
-(function() {
+function ListManager() {
+    this._listNoteContent = [];
+    this._wrapper = document.querySelector('#note-list-wrapper');
+}
 
-  var _listNoteContent = [];
-  var _wrapper = document.querySelector('#note-list-wrapper');
-
-  function start() {
-    fetchList(function(data) {
-      updateList(data);
-      drawList();
-      preloadFirstNote();
-    });
-    window.addEventListener('click', function(event) {
-      onNoteOpen(event);
-    });
-  }
-
-  function onNoteOpen(event) {
-    if (event.target.classList.contains('note-title')) {
-      var id = event.target.dataset.noteId;
-      var content = _listNoteContent[id];
-      window.dispatchEvent(new CustomEvent('note-open',
-        { detail: content }));
-    };
-  }
-
-  function preloadFirstNote() {
-    if (_listNoteContent.length !== 0) {
-      var content = _listNoteContent[0];
-      window.dispatchEvent(new CustomEvent('note-open',
-        { detail: content }));
+ListManager.prototype = {
+    start: function () {
+        this.fetchList().then(function (data) {
+            this.updateList(data);
+        }.bind(this)).then(this.drawList.bind(this)).then(this.preloadFirstNote.bind(this));
+        window.addEventListener('click', function (event) {
+            this.onNoteOpen(event);
+        }.bind(this));
+    },
+    onNoteOpen: function (event) {
+        if (event.target.classList.contains('note-title')) {
+            var id = event.target.dataset.noteId;
+            var content = this._listNoteContent[id];
+            window.dispatchEvent(new CustomEvent('note-open',
+                {detail: content}));
+        }
+    },
+    preloadFirstNote: function () {
+        if (this._listNoteContent.length !== 0) {
+            var content = this._listNoteContent[0];
+            window.dispatchEvent(new CustomEvent('note-open',
+                {detail: content}));
+        }
+    },
+    updateList: function (list) {
+        this._listNoteContent = list;
+    },
+    drawList: function () {
+        var list = this._listNoteContent;
+        var ul = document.createElement('ul');
+        ul.id = 'note-title-list';
+        var buff = document.createDocumentFragment();
+        list.forEach(function (note, i) {
+            var li = document.createElement('li');
+            li.dataset.noteId = i;
+            li.classList.add('note-title');
+            li.textContent = note.title;
+            // Note: buff is captured, so we now have a
+            // little closure naturally.
+            buff.appendChild(li);
+        });
+        ul.appendChild(buff);
+        this._wrapper.appendChild(ul);
+    },
+    fetchList: function () {
+        return new Promise(function (onFulfilled, onRejected) {
+            var xhr = new XMLHttpRequest();
+            xhr.open('GET', 'http://127.0.0.1:8000/demo-list-notes.json', true);
+            xhr.responseType = 'json';
+            xhr.onreadystatechange = function (e) {
+                // Watch out: we have a mysterious unknown 'this'.
+                if (this.readyState === 4 && this.status === 200) {
+                    var listData = this.response;
+                    // The flow ends here.
+                    onFulfilled(listData);
+                } else if (this.status !== 200) {
+                    // Ignore error in this case.
+                    //onRejected()
+                }
+            };
+            xhr.send();
+        })
     }
-  }
-
-  function updateList(list) {
-    _listNoteContent = list;
-  }
-
-  function drawList() {
-    var list = _listNoteContent;
-    var ul = document.createElement('ul');
-    ul.id = 'note-title-list';
-    var buff = document.createDocumentFragment();
-    list.forEach(function(note, i) {
-      var li = document.createElement('li');
-      li.dataset.noteId = i;
-      li.classList.add('note-title');
-      li.textContent = note.title;
-      // Note: buff is captured, so we now have a
-      // little closure naturally.
-      buff.appendChild(li);
-    });
-    ul.appendChild(buff);
-    _wrapper.appendChild(ul);
-  }
-
-  function fetchList(afterFetch) {
-    var xhr = new XMLHttpRequest();
-    xhr.open('GET', 'http://127.0.0.1:8000/demo-list-notes.json', true);
-    xhr.responseType = 'json';
-    xhr.onreadystatechange = function(e) {
-      // Watch out: we have a mysterious unknown 'this'.
-      if (this.readyState === 4 && this.status === 200) {
-        var listData = this.response;
-        // The flow ends here.
-        afterFetch(listData);
-      } else if (this.status !== 200 ){
-        // Ignore error in this case.
-      }
-    };
-    xhr.send();
-  }
-
-  document.addEventListener('DOMContentLoaded', function(event) {
-    start();
-  });
+};
 
-})();
+var listManager = new ListManager();
+document.addEventListener('DOMContentLoaded', function (event) {
+    listManager.start();
+});

homework/test/test-list.js

@@ -3,6 +3,6 @@ describe('Test > ', function() {
   });
 
   it('will test some pure functions', function() {
-    // Write any pure function assertion here.
+    assert.equal('3',Math.abs(-3));
   });
 });