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Commit 4116c09d authored by Ryan Niemeyer's avatar Ryan Niemeyer
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Update Knockout.js sample to use 2.0.0 features.

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todo-example/knockoutjs/index.html
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...@@ -3,9 +3,7 @@ ...@@ -3,9 +3,7 @@
<head> <head>
<title>Knockout.js</title> <title>Knockout.js</title>
<link href="css/todos.css" media="all" rel="stylesheet" type="text/css" /> <link href="css/todos.css" media="all" rel="stylesheet" type="text/css" />
<script src="js/jquery-1.6.1.js" type="text/javascript"></script> <script src="js/knockout-2.0.0.js" type="text/javascript"></script>
<script src="js/jquery.tmpl.js" type="text/javascript"></script>
<script src="js/knockout-1.2.1.js" type="text/javascript"></script>
</head> </head>
<body> <body>
<div id="todoapp"> <div id="todoapp">
...@@ -14,20 +12,41 @@ ...@@ -14,20 +12,41 @@
</div> </div>
<div class="content"> <div class="content">
<div id="create-todo"> <div id="create-todo">
<input id="new-todo" data-bind="value: current, event: { keyup: add}" placeholder="What needs to be done?" <input id="new-todo" data-bind="value: current, valueUpdate: 'afterkeydown', event: { keyup: add }" placeholder="What needs to be done?" />
type="text" />
<span class="ui-tooltip-top" style="display: none;">Press Enter to save this task</span> <span class="ui-tooltip-top" style="display: none;">Press Enter to save this task</span>
</div> </div>
<div id="todos"> <div id="todos">
<ul id="todo-list" data-bind="template: { name: 'todoitemtemplate', foreach: todos }"> <ul id="todo-list" data-bind="foreach: todos">
<li data-bind="css: { editing: editing }">
<div class="todo" data-bind="css: { done : done }">
<div class="display">
<input class="check" type="checkbox" data-bind="checked: done" />
<div class="todo-content" data-bind="text: content, event: { dblclick: edit }" style="cursor: pointer;"></div>
<span class="todo-destroy" data-bind="click: $root.remove"></span>
</div>
<div class="edit">
<input class="todo-input" data-bind="value: content, valueUpdate: 'afterkeydown', event: { keyup: editkeyup, blur: stopEditing }"/>
</div>
</div>
</li>
</ul> </ul>
</div> </div>
<div id="todo-stats" data-bind="template: { name: 'statstemplate'}"> <div id="todo-stats">
<span class="todo-count" data-bind="visible: remainingCount">
<span class="number" data-bind="text: remainingCount"></span>
<span class="word" data-bind="text: getLabel(remainingCount)"></span> left.
</span>
<span class="todo-clear" data-bind="visible: completedCount">
<a href="#" data-bind="click: removeCompleted">
Clear <span class="number-done" data-bind="text: completedCount"></span>
completed <span class="word-done" data-bind="text: getLabel(completedCount)"></span>
</a>
</span>
</div> </div>
</div> </div>
</div> </div>
<ul id="instructions"> <ul id="instructions">
<li>Double-click to edit a todo.</li> <li data-bind="visible: todos().length">Double-click to edit a todo.</li>
</ul> </ul>
<div id="credits"> <div id="credits">
Created by Created by
...@@ -37,96 +56,84 @@ ...@@ -37,96 +56,84 @@
Modified to use knockout.js by Modified to use knockout.js by
<br /> <br />
<a href="https://github.com/ashish01/knockoutjs-todos">Ashish Sharma</a> <a href="https://github.com/ashish01/knockoutjs-todos">Ashish Sharma</a>
<br/>
Updated to use knockout.js 2.0 by
<br/>
<a href="http://knockmeout.net">Ryan Niemeyer</a>
<br /> <br />
Patches/fixes for cross-browser compat: Patches/fixes for cross-browser compat:
<br /> <br />
<a href="http://twitter.com/addyosmani">Addy Osmani</a> <a href="http://twitter.com/addyosmani">Addy Osmani</a>
</div> </div>
<script id="todoitemtemplate" type="text/html">
<li data-bind="css: {editing: editing}">
<div data-bind="attr: { class : done() ? 'todo done' : 'todo'}">
<div class="display">
<input class="check" type="checkbox" data-bind="checked: done" />
<div class="todo-content" data-bind="text: content, click: edit" style="cursor: pointer;"></div>
<span class="todo-destroy" data-bind="click: viewModel.remove"></span>
</div>
<div class="edit">
<input class="todo-input" type="text" data-bind="value: content, event: { keyup: editkeyup, blur: stopEditing }"/>
</div>
</div>
</li>
</script>
<script id="statstemplate" type="text/html">
<span class="todo-count" data-bind="visible: remaining().length > 0">
<span class="number" data-bind="text: remaining().length"></span>
<span class="word" data-bind="text: remaining().length == 1 ? 'item' : 'items'"></span> left.
</span>
<span class="todo-clear" data-bind="visible: done().length > 0">
<a href="#" data-bind="click: removeCompleted">
Clear <span class="number-done" data-bind="text: done().length"></span>
completed <span class="word-done"data-bind="text: done().length == 1 ? 'item' : 'items'"></span>
</a>
</span>
</script>
<script type="text/javascript"> <script type="text/javascript">
(function() {
//represent a single todo item
var Todo = function (text) { var Todo = function (text) {
this.content = ko.observable(text); this.content = ko.observable(text);
this.order = ko.observable();
this.done = ko.observable(false); this.done = ko.observable(false);
this.editing = ko.observable(false); this.editing = ko.observable(false);
this.edit = function() { this.editing(true); }; };
this.stopEditing = function() { this.editing(false); };
this.editkeyup = function(event) { //can place methods on prototype, as there can be many todos
ko.utils.extend(Todo.prototype, {
edit: function() { this.editing(true); },
stopEditing: function() { this.editing(false); },
editkeyup: function(data, event) {
if (event.keyCode === 13) { if (event.keyCode === 13) {
this.stopEditing(); this.stopEditing();
} }
};
} }
});
var viewModel = { //our main view model
todos: ko.observableArray(), var ViewModel = function() {
current: ko.observable(), var self = this;
add: function (event) { this.todos = ko.observableArray();
if (event.keyCode === 13) { this.current = ko.observable();
var todoContent = "";
/*includes fix for Opera*/
(viewModel.current() == undefined) ? todoContent = $('#new-todo').val() : todoContent = viewModel.current();
var newTodo = new Todo(todoContent);
this.todos.push(newTodo);
this.current("");
//add a new todo, when enter key is pressed
this.add = function (data, event) {
if (event.keyCode === 13) {
var newTodo = new Todo(self.current());
self.todos.push(newTodo);
self.current("");
} }
};
}, //remove a single todo
this.remove = function (todo) {
remove: function (event) { self.todos.remove(todo);
viewModel.todos.remove(this);
},
removeCompleted: function (event) {
viewModel.todos.removeAll(viewModel.done());
}
}; };
//remove all completed todos
this.removeCompleted = function () {
self.todos.remove(function(todo) {
return todo.done();
});
};
viewModel.remaining = ko.dependentObservable(function () { //count of all completed todos
return this.todos().filter(function (el) { this.completedCount = ko.computed(function () {
return el.done() === false; return ko.utils.arrayFilter(self.todos(), function(todo) {
return todo.done();
}).length;
}); });
}, viewModel),
viewModel.done = ko.dependentObservable(function () { //count of todos that are not complete
return this.todos().filter(function (el) { this.remainingCount = ko.computed(function () {
return el.done() === true; return self.todos().length - self.completedCount();
}); });
}, viewModel),
//helper function to keep expressions out of markup
this.getLabel = function(count) {
return ko.utils.unwrapObservable(count) === 1 ? "item" : "items";
};
};
ko.applyBindings(viewModel); //bind a new instance of our view model to the page
ko.applyBindings(new ViewModel());
})();
</script> </script>
</body> </body>
</html> </html>
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