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todomvc
Commit 6ca1d7c6 authored by Sindre Sorhus's avatar Sindre Sorhus
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VanillaJS app: Wrap IIFE and use strict

parent 124b1c99
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vanilla-examples/vanillajs/index.html
View file @ 6ca1d7c6
......@@ -12,7 +12,7 @@
<body>
<section id="todoapp">
<header id="header">
<h1>Todos</h1>
<h1>todos</h1>
<input id="new-todo" placeholder="What needs to be done?" autofocus>
</header>
<section id="main">
......
vanilla-examples/vanillajs/js/app.js
View file @ 6ca1d7c6
var todos = [],
stat = {},
ENTER_KEY = 13;
window.addEventListener( 'load', windowLoadHandler, false );
function Todo( title, completed ) {
this.id = getUuid();
this.title = title;
this.completed = completed;
}
function Stat() {
this.todoLeft = 0;
this.todoCompleted = 0;
this.totalTodo = 0;
}
function windowLoadHandler() {
loadTodos();
refreshData();
addEventListeners();
}
function addEventListeners() {
document.getElementById('new-todo').addEventListener( 'keypress', newTodoKeyPressHandler, false );
document.getElementById('toggle-all').addEventListener( 'change', toggleAllChangeHandler, false );
}
function inputEditTodoKeyPressHandler( event ) {
var inputEditTodo = event.target,
trimmedText = inputEditTodo.value.trim(),
todoId = event.target.id.slice( 6 );
if ( trimmedText ) {
if ( event.keyCode === ENTER_KEY ) {
editTodo( todoId, trimmedText );
}
} else {
removeTodoById( todoId );
refreshData();
}
}
(function() {
'use strict';
function inputEditTodoBlurHandler( event ) {
var inputEditTodo = event.target,
todoId = event.target.id.slice( 6 );
var todos = [],
stat = {},
ENTER_KEY = 13;
editTodo( todoId, inputEditTodo.value );
}
window.addEventListener( 'load', windowLoadHandler, false );
function newTodoKeyPressHandler( event ) {
if ( event.keyCode === ENTER_KEY ) {
addTodo( document.getElementById('new-todo').value );
function Todo( title, completed ) {
this.id = getUuid();
this.title = title;
this.completed = completed;
}
}
function toggleAllChangeHandler( event ) {
for ( var i in todos ) {
todos[ i ].completed = event.target.checked;
function Stat() {
this.todoLeft = 0;
this.todoCompleted = 0;
this.totalTodo = 0;
}
refreshData();
}
function windowLoadHandler() {
loadTodos();
refreshData();
addEventListeners();
}
function spanDeleteClickHandler( event ) {
removeTodoById( event.target.getAttribute('data-todo-id') );
refreshData();
}
function addEventListeners() {
document.getElementById('new-todo').addEventListener( 'keypress', newTodoKeyPressHandler, false );
document.getElementById('toggle-all').addEventListener( 'change', toggleAllChangeHandler, false );
}
function hrefClearClickHandler() {
removeTodosCompleted();
refreshData();
}
function inputEditTodoKeyPressHandler( event ) {
var inputEditTodo = event.target,
trimmedText = inputEditTodo.value.trim(),
todoId = event.target.id.slice( 6 );
if ( trimmedText ) {
if ( event.keyCode === ENTER_KEY ) {
editTodo( todoId, trimmedText );
}
} else {
removeTodoById( todoId );
refreshData();
}
}
function todoContentHandler( event ) {
var todoId = event.target.getAttribute('data-todo-id'),
div = document.getElementById( 'li_' + todoId ),
inputEditTodo = document.getElementById( 'input_' + todoId );
function inputEditTodoBlurHandler( event ) {
var inputEditTodo = event.target,
todoId = event.target.id.slice( 6 );
div.className = 'editing';
inputEditTodo.select();
}
editTodo( todoId, inputEditTodo.value );
}
function checkboxChangeHandler( event ) {
var checkbox = event.target,
todo = getTodoById( checkbox.getAttribute('data-todo-id') );
function newTodoKeyPressHandler( event ) {
if ( event.keyCode === ENTER_KEY ) {
addTodo( document.getElementById('new-todo').value );
}
}
todo.completed = checkbox.checked;
refreshData();
}
function toggleAllChangeHandler( event ) {
for ( var i in todos ) {
todos[ i ].completed = event.target.checked;
}
function loadTodos() {
if ( !localStorage.getItem('todos-vanillajs') ) {
localStorage.setItem( 'todos-vanillajs', JSON.stringify([]) );
refreshData();
}
todos = JSON.parse( localStorage.getItem('todos-vanillajs') );
}
function addTodo( text ) {
var trimmedText = text.trim();
function spanDeleteClickHandler( event ) {
removeTodoById( event.target.getAttribute('data-todo-id') );
refreshData();
}
if ( trimmedText ) {
var todo = new Todo( trimmedText, false );
todos.push( todo );
function hrefClearClickHandler() {
removeTodosCompleted();
refreshData();
}
}
function editTodo( todoId, text ) {
var i, l;
function todoContentHandler( event ) {
var todoId = event.target.getAttribute('data-todo-id'),
div = document.getElementById( 'li_' + todoId ),
inputEditTodo = document.getElementById( 'input_' + todoId );
for ( i = 0, l = todos.length; i < l; i++ ) {
if ( todos[ i ].id === todoId ) {
todos[ i ].title = text;
div.className = 'editing';
inputEditTodo.select();
}
function checkboxChangeHandler( event ) {
var checkbox = event.target,
todo = getTodoById( checkbox.getAttribute('data-todo-id') );
todo.completed = checkbox.checked;
refreshData();
}
function loadTodos() {
if ( !localStorage.getItem('todos-vanillajs') ) {
localStorage.setItem( 'todos-vanillajs', JSON.stringify([]) );
}
todos = JSON.parse( localStorage.getItem('todos-vanillajs') );
}
refreshData();
}
function addTodo( text ) {
var trimmedText = text.trim();
if ( trimmedText ) {
var todo = new Todo( trimmedText, false );
todos.push( todo );
refreshData();
}
}
function removeTodoById( id ) {
var i = todos.length;
function editTodo( todoId, text ) {
var i, l;
while ( i-- ) {
if ( todos[ i ].id === id ) {
todos.splice( i, 1 );
for ( i = 0, l = todos.length; i < l; i++ ) {
if ( todos[ i ].id === todoId ) {
todos[ i ].title = text;
}
}
refreshData();
}
}
function removeTodosCompleted() {
var i = todos.length;
function removeTodoById( id ) {
var i = todos.length;
while ( i-- ) {
console.log(i);
if ( todos[ i ].completed ) {
todos.splice( i, 1 );
while ( i-- ) {
if ( todos[ i ].id === id ) {
todos.splice( i, 1 );
}
}
}
}
}
function removeTodosCompleted() {
var i = todos.length;
while ( i-- ) {
console.log(i);
if ( todos[ i ].completed ) {
todos.splice( i, 1 );
}
}
}
function getTodoById( id ) {
var i, l;
function getTodoById( id ) {
var i, l;
for ( i = 0, l = todos.length; i < l; i++ ) {
if ( todos[ i ].id === id ) {
return todos[ i ];
for ( i = 0, l = todos.length; i < l; i++ ) {
if ( todos[ i ].id === id ) {
return todos[ i ];
}
}
}
}
function refreshData() {
saveTodos();
computeStats();
redrawTodosUI();
redrawStatsUI();
changeToggleAllCheckboxState();
}
function refreshData() {
saveTodos();
computeStats();
redrawTodosUI();
redrawStatsUI();
changeToggleAllCheckboxState();
}
function saveTodos() {
localStorage.setItem( 'todos-vanillajs', JSON.stringify( todos ) );
}
function saveTodos() {
localStorage.setItem( 'todos-vanillajs', JSON.stringify( todos ) );
}
function computeStats() {
var i, l;
function computeStats() {
var i, l;
stat = new Stat();
stat.totalTodo = todos.length;
stat = new Stat();
stat.totalTodo = todos.length;
for ( i = 0, l = todos.length; i < l; i++ ) {
if ( todos[ i ].completed ) {
stat.todoCompleted++;
for ( i = 0, l = todos.length; i < l; i++ ) {
if ( todos[ i ].completed ) {
stat.todoCompleted++;
}
}
stat.todoLeft = stat.totalTodo - stat.todoCompleted;
}
stat.todoLeft = stat.totalTodo - stat.todoCompleted;
}
function redrawTodosUI() {
function redrawTodosUI() {
var todo, checkbox, label, deleteLink, divDisplay, inputEditTodo, li, i, l,
ul = document.getElementById('todo-list');
var todo, checkbox, label, deleteLink, divDisplay, inputEditTodo, li, i, l,
ul = document.getElementById('todo-list');
document.getElementById('main').style.display = todos.length ? 'block' : 'none';
document.getElementById('main').style.display = todos.length ? 'block' : 'none';
ul.innerHTML = '';
document.getElementById('new-todo').value = '';
ul.innerHTML = '';
document.getElementById('new-todo').value = '';
for ( i = 0, l = todos.length; i < l; i++ ) {
todo = todos[ i ];
for ( i = 0, l = todos.length; i < l; i++ ) {
todo = todos[ i ];
// create checkbox
checkbox = document.createElement('input');
checkbox.className = 'toggle';
checkbox.setAttribute( 'data-todo-id', todo.id );
checkbox.type = 'checkbox';
checkbox.addEventListener( 'change', checkboxChangeHandler );
// create checkbox
checkbox = document.createElement('input');
checkbox.className = 'toggle';
checkbox.setAttribute( 'data-todo-id', todo.id );
checkbox.type = 'checkbox';
checkbox.addEventListener( 'change', checkboxChangeHandler );
// create div text
label = document.createElement('label');
label.setAttribute( 'data-todo-id', todo.id );
label.appendChild( document.createTextNode( todo.title ) );
// create div text
label = document.createElement('label');
label.setAttribute( 'data-todo-id', todo.id );
label.appendChild( document.createTextNode( todo.title ) );
// create delete button
deleteLink = document.createElement('button');
deleteLink.className = 'destroy';
deleteLink.setAttribute( 'data-todo-id', todo.id );
deleteLink.addEventListener( 'click', spanDeleteClickHandler );
// create delete button
deleteLink = document.createElement('button');
deleteLink.className = 'destroy';
deleteLink.setAttribute( 'data-todo-id', todo.id );
deleteLink.addEventListener( 'click', spanDeleteClickHandler );
// create divDisplay
divDisplay = document.createElement('div');
divDisplay.className = 'view';
divDisplay.setAttribute( 'data-todo-id', todo.id );
divDisplay.appendChild( checkbox );
divDisplay.appendChild( label );
divDisplay.appendChild( deleteLink );
divDisplay.addEventListener( 'dblclick', todoContentHandler );
// create divDisplay
divDisplay = document.createElement('div');
divDisplay.className = 'view';
divDisplay.setAttribute( 'data-todo-id', todo.id );
divDisplay.appendChild( checkbox );
divDisplay.appendChild( label );
divDisplay.appendChild( deleteLink );
divDisplay.addEventListener( 'dblclick', todoContentHandler );
// create todo input
inputEditTodo = document.createElement('input');
inputEditTodo.id = 'input_' + todo.id;
inputEditTodo.className = 'edit';
inputEditTodo.value = todo.title;
inputEditTodo.addEventListener( 'keypress', inputEditTodoKeyPressHandler );
inputEditTodo.addEventListener( 'blur', inputEditTodoBlurHandler );
// create todo input
inputEditTodo = document.createElement('input');
inputEditTodo.id = 'input_' + todo.id;
inputEditTodo.className = 'edit';
inputEditTodo.value = todo.title;
inputEditTodo.addEventListener( 'keypress', inputEditTodoKeyPressHandler );
inputEditTodo.addEventListener( 'blur', inputEditTodoBlurHandler );
// create li
li = document.createElement('li');
li.id = 'li_' + todo.id;
li.appendChild( divDisplay );
li.appendChild( inputEditTodo );
// create li
li = document.createElement('li');
li.id = 'li_' + todo.id;
li.appendChild( divDisplay );
li.appendChild( inputEditTodo );
if ( todo.completed ) {
li.className += 'complete';
checkbox.checked = true;
}
if ( todo.completed ) {
li.className += 'complete';
checkbox.checked = true;
ul.appendChild( li );
}
ul.appendChild( li );
}
}
function changeToggleAllCheckboxState() {
var toggleAll = document.getElementById('toggle-all');
function changeToggleAllCheckboxState() {
var toggleAll = document.getElementById('toggle-all');
toggleAll.checked = stat.todoCompleted === todos.length;
}
toggleAll.checked = stat.todoCompleted === todos.length;
}
function redrawStatsUI() {
removeChildren( document.getElementsByTagName('footer')[0] );
document.getElementById('footer').style.display = todos.length ? 'block' : 'none';
function redrawStatsUI() {
removeChildren( document.getElementsByTagName('footer')[0] );
document.getElementById('footer').style.display = todos.length ? 'block' : 'none';
if ( stat.todoCompleted ) {
drawTodoClear();
}
if ( stat.todoCompleted ) {
drawTodoClear();
}
if ( stat.totalTodo ) {
drawTodoCount();
if ( stat.totalTodo ) {
drawTodoCount();
}
}
}
function drawTodoCount() {
var number = document.createElement('strong'),
remaining = document.createElement('span'),
text = ' ' + ( stat.todoLeft === 1 ? 'item' : 'items' ) + ' left';
function drawTodoCount() {
var number = document.createElement('strong'),
remaining = document.createElement('span'),
text = ' ' + ( stat.todoLeft === 1 ? 'item' : 'items' ) + ' left';
// create remaining count
number.innerHTML = stat.todoLeft;
// create remaining count
number.innerHTML = stat.todoLeft;
remaining.id = 'todo-count';
remaining.appendChild( number );
remaining.appendChild( document.createTextNode( text ) );
remaining.id = 'todo-count';
remaining.appendChild( number );
remaining.appendChild( document.createTextNode( text ) );
document.getElementsByTagName('footer')[0].appendChild( remaining );
}
document.getElementsByTagName('footer')[0].appendChild( remaining );
}
function drawTodoClear() {
var buttonClear = document.createElement('button');
function drawTodoClear() {
var buttonClear = document.createElement('button');
buttonClear.id = 'clear-completed';
buttonClear.addEventListener( 'click', hrefClearClickHandler );
buttonClear.innerHTML = 'Clear completed (' + stat.todoCompleted + ')';
buttonClear.id = 'clear-completed';
buttonClear.addEventListener( 'click', hrefClearClickHandler );
buttonClear.innerHTML = 'Clear completed (' + stat.todoCompleted + ')';
document.getElementsByTagName('footer')[0].appendChild( buttonClear );
}
document.getElementsByTagName('footer')[0].appendChild( buttonClear );
}
function removeChildren( node ) {
node.innerHTML = '';
}
function removeChildren( node ) {
node.innerHTML = '';
}
function getUuid() {
var i, random,
uuid = '';
function getUuid() {
var i, random,
uuid = '';
for ( i = 0; i < 32; i++ ) {
random = Math.random() * 16 | 0;
if ( i === 8 || i === 12 || i === 16 || i === 20 ) {
uuid += '-';
for ( i = 0; i < 32; i++ ) {
random = Math.random() * 16 | 0;
if ( i === 8 || i === 12 || i === 16 || i === 20 ) {
uuid += '-';
}
uuid += ( i === 12 ? 4 : (i === 16 ? (random & 3 | 8) : random) ).toString( 16 );
}
uuid += ( i === 12 ? 4 : (i === 16 ? (random & 3 | 8) : random) ).toString( 16 );
return uuid;
}
return uuid;
}
\ No newline at end of file
})();
\ No newline at end of file
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