| license: bsd-3-clause |
A minimal todo web app with d3-view. 80 lines of javascript + 40 lines of html!
Tip: double click to edit a todo entry
It uses the todoapp custom component and d3-attr-*, d3-for, d3-class and d3-on-* directives. In addition, this example illustrates the use of d3-require when using only d3 plugins required by your application.
| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Todo View Example</title> | |
| <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-beta/css/bootstrap.min.css"/> | |
| <script src="https://unpkg.com/d3-require@0.4.5/build/d3-require.js"></script> | |
| <style> | |
| .view .done { | |
| text-decoration: line-through; | |
| color: #b7b7b7; | |
| } | |
| .info { | |
| padding: .75rem 2rem; | |
| } | |
| .todo-container { | |
| max-width: 800px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="container-fluid"> | |
| <div class="row"> | |
| <div class="col-lg-3"></div> | |
| <div class="col-lg-6"> | |
| <todoapp></todoapp> | |
| </div> | |
| <div class="col-lg-3"></div> | |
| </div> | |
| </div> | |
| <script src="./script.js"></script> | |
| </body> |
| window.d3.require('d3-view', 'd3-transition').then(function (d3) { | |
| var todoapp = { | |
| model () { | |
| return { | |
| placeholder: "What needs to be done?", | |
| newTodo: "", | |
| todos: [todo('something to do'), todo('something else to do')], | |
| done: { | |
| reactOn: ['todos'], | |
| get: function () { | |
| return this.todos.length - count(this.todos); | |
| } | |
| }, | |
| count: { | |
| reactOn: ['todos'], | |
| get: function () { | |
| return count(this.todos); | |
| } | |
| }, | |
| left: { | |
| reactOn: ['todos'], | |
| get: function () { | |
| var c = count(this.todos); | |
| if (c === 1) return '1 item left'; | |
| return c + ' items left'; | |
| } | |
| }, | |
| // Model actions | |
| $addTodo () { | |
| if (this.$event && this.$event.keyCode !== 13) return; | |
| if (this.newTodo) { | |
| var todos = this.todos.slice(); | |
| todos.push(todo(this.newTodo)); | |
| this.newTodo = ''; | |
| this.todos = todos; | |
| } | |
| }, | |
| $clear () { | |
| if (this.$event) this.$event.preventDefault(); | |
| var todos = this.todos.reduce(function (t, todo) { | |
| if (!todo.done) t.push(todo); | |
| return t; | |
| }, []); | |
| if (todos.length < this.todos.length) this.todos = todos; | |
| }, | |
| $toggle (item) { | |
| item.done = !item.done; | |
| // trigger a change in todos property | |
| this.$change('todos'); | |
| }, | |
| $edit (item) { | |
| if (!item.done) item.edit = true; | |
| }, | |
| $doneEdit (item) { | |
| if (this.$event && this.$event.keyCode !== 13) return; | |
| item.edit = false; | |
| } | |
| }; | |
| }, | |
| render () { | |
| return this.renderFromUrl('./todo.html') | |
| } | |
| }; | |
| var vm = d3.view({ | |
| components: { | |
| todoapp: todoapp | |
| } | |
| }); | |
| vm.mount('body'); | |
| function todo (text) { | |
| return { | |
| text: text, | |
| done: false, | |
| edit: false | |
| } | |
| } | |
| function count (todos) { | |
| return todos.reduce(function (c, t) { | |
| return c + !t.done; | |
| }, 0); | |
| } | |
| }); |
| <section class="todoapp"> | |
| <header class="header"> | |
| <h1 class="display-1 text-center">Todos</h1> | |
| </header> | |
| <section class="main"> | |
| <ul class="list-group todo-list"> | |
| <li class="list-group-item"> | |
| <input class="form-control form-control-lg new-todo" | |
| autofocus="autofocus" autocomplete="off" | |
| d3-attr-placeholder="placeholder" | |
| d3-on-keyup="$addTodo()" | |
| d3-value="newTodo"> | |
| </li> | |
| <li class="list-group-item info"> | |
| <span class="todo-count" d3-html="left"></span> | |
| <a d3-if="done" | |
| class="clear-completed float-right" | |
| href="#" | |
| d3-on="$clear()">Clear completed</a> | |
| </li> | |
| <li class="list-group-item todo" d3-for="item in todos" data-transition-duration=500> | |
| <div class="input-group view"> | |
| <span class="input-group-addon"> | |
| <input type="checkbox" class=="toggle" d3-on="$toggle(item)"> | |
| </span> | |
| <input type="text" | |
| class="form-control form-control-lg" | |
| d3-class="item.done ? 'done' : null" | |
| d3-attr-value="item.text" | |
| d3-attr-readOnly="!item.edit" | |
| d3-on-dblclick="$edit(item)" | |
| d3-on-keyup="$doneEdit(item)"> | |
| </div> | |
| </li> | |
| </ul> | |
| </section> | |
| </section> |
