Hallo.js是一个简单的富文本Web编辑器,基于jQuery UI并且利用HTML5的contentEditable实现所见即所得。其目标并不是取代当今非常流行的编辑器,如 TinyMCE 或 Aloha Editor,而是给开发者提供一种更简单、更愉快的用户编辑体验。
Hallo.js是由Henri Bergius为IKS项目开发的一款免费软件,使用CoffeeScript开发,遵循MIT许可协议,托管在GitHub上。
使用方法
1、你需要将jQuery、jQuery UI和Rangy库引入到你的项目中:
<script src="https://www.jb51.net/js/jquery.min.js"></script> <script src="https://www.jb51.net/js/jquery-ui.min.js"></script> <script src="https://www.jb51.net/js/rangy-core.js"></script>
编辑器工具栏使用jQuery UI的主题,因此你可能还想自定义一个主题,适合你的需要。工具栏图标字体基于Font Awesome。风格的工具栏出现在演示中,你也会想添加一些CSS(如背景和边框)的类hallotoolbar。
<link href="https://www.jb51.net/path/to/your/jquery-ui.css"> <link href="https://www.jb51.net/path/to/your/font-awesome.css">
引入Hallo.js
<script src="https://www.jb51.net/hallo.js"></script>
调用插件是非常简单的
jQuery('p').hallo();
你也可以关闭标签的编辑功能
jQuery('p').hallo({editable: false});
Hallo自己只能使选择的DOM元素可编辑和不提供任何格式的工具。格式是通过加载插件初始化Hallo。即使简单的事情,如粗体和斜体的插件:
jQuery('.editable').hallo({ plugins: { 'halloformat': {} } });
这个例子可以使简单的格式的插件,提供如粗体和斜体的功能。你可以有很多好的插件为你想,如果有必要通过他们的选择。
Hallo有更多的选项设置当实例化。请参阅文档hallo.coffee文件。
事件方法
Hallo有一些事件,有助于整合和调用。你可以使用jQuery bind订阅它们:
halloenabled: Triggered when an editable is enabled (editable set to true)
hallodisabled: Triggered when an editable is disabled (editable set to false)
hallomodified: Triggered whenever user has changed the contents being edited. Event data key content contains the HTML
halloactivated: Triggered when user activates an editable area (usually by clicking it)
hallodeactivated: Triggered when user deactivates an editable area
插件
halloformat – Adds Bold, Italic, StrikeThrough and Underline support to the toolbar. (Enable/Disable with options: “formattings”: {“bold”: true, “italic”: true, “strikethrough”: true, “underline”: false})
halloheadings – Adds support for H1, H2, H3. You can pass a headings option key to specify what is going to be displayed (e.g. “formatBlocks”:[“p”, “h2″,”h3”])
hallojustify – Adds align left, center, right support
hallolists – Adds support for ordered and unordered lists (Pick with options: “lists”: {“ordered”: false, “unordered”: true})
halloreundo – Adds support for undo and redo
hallolink – Adds support to add links to a selection (currently not working)
halloimage – Image uploading, searching, suggestions
halloblacklist – Filtering unwanted tags from the content
编写一个插件
Hallo插件编写正则jQuery UI插件。
当Hallo加载也加载单元所有启用的插件,并通过他们一些额外的选项:
editable: The main Hallo widget instance
uuid: unique identifier of the Hallo instance, can be used for element IDs
一个简单的插件看起来像以下的:
# Formatting plugin for Hallo # (c) 2011 Henri Bergius, IKS Consortium # Hallo may be freely distributed under the MIT license ((jQuery) -> jQuery.widget "IKS.halloformat", boldElement: null options: uuid: '' editable: null _create: -> # Add any actions you want to run on plugin initialization # here populateToolbar: (toolbar) -> # Create an element for holding the button @boldElement = jQuery '<span></span>' # Use Hallo Button @boldElement.hallobutton uuid: @options.uuid editable: @options.editable label: 'Bold' # Icons come from Font Awesome icon: 'icon-bold' # Commands are used for execCommand and queryCommandState command: 'bold' # Append the button to toolbar toolbar.append @boldElement cleanupContentClone: (element) -> # Perform content clean-ups before HTML is sent out )(jQuery)