ckeditor5 使用第一天 下载并加载居中，居左，居右功能

官方网站地址https://ckeditor.com/，下载zip包或者从git上下载，

下载完成后解压文件，将文件复制到项目中

，

引用ckeditor.js，zh-cn.js路径到项目中,

初始化ckeditor,代码如下：

<textarea id="pc" name="pc" style="display: none;"></textarea>

ClassicEditor
        .create(document.querySelector('#pc'),{
            language:'zh-cn'
        })
        .catch(error => {
        console.error( error );
});
其中language代表本地化语言属性
2、自定义工具栏，添加居中，居右，居左功能，
从git上克隆项目，并确保本地安装有node.js,输入如下命令
//克隆ckeditor项目

git clone -b stable https://github.com/ckeditor/ckeditor5-build-classic.git

//进入项目路径下 

cd ckeditor5-build-classic

//npm(前提安装有node.js) 

npm install

//执行命令安装alignment插件

npm install --save-dev @ckeditor/ckeditor5-alignment
安装完成后修改ckeditor.js文件，

/**
* @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.
* For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
*/

// The editor creator to use.
import ClassicEditorBase from '@ckeditor/ckeditor5-editor-classic/src/classiceditor';

import Essentials from '@ckeditor/ckeditor5-essentials/src/essentials';
import UploadAdapter from '@ckeditor/ckeditor5-adapter-ckfinder/src/uploadadapter';
import Autoformat from '@ckeditor/ckeditor5-autoformat/src/autoformat';
import Bold from '@ckeditor/ckeditor5-basic-styles/src/bold';
import Italic from '@ckeditor/ckeditor5-basic-styles/src/italic';
import BlockQuote from '@ckeditor/ckeditor5-block-quote/src/blockquote';
import CKFinder from '@ckeditor/ckeditor5-ckfinder/src/ckfinder';
import EasyImage from '@ckeditor/ckeditor5-easy-image/src/easyimage';
import Heading from '@ckeditor/ckeditor5-heading/src/heading';
import Image from '@ckeditor/ckeditor5-image/src/image';
import ImageCaption from '@ckeditor/ckeditor5-image/src/imagecaption';
import ImageStyle from '@ckeditor/ckeditor5-image/src/imagestyle';
import ImageToolbar from '@ckeditor/ckeditor5-image/src/imagetoolbar';
import ImageUpload from '@ckeditor/ckeditor5-image/src/imageupload';
import Link from '@ckeditor/ckeditor5-link/src/link';
import List from '@ckeditor/ckeditor5-list/src/list';
import MediaEmbed from '@ckeditor/ckeditor5-media-embed/src/mediaembed';
import Paragraph from '@ckeditor/ckeditor5-paragraph/src/paragraph';
import PasteFromOffice from '@ckeditor/ckeditor5-paste-from-office/src/pastefromoffice';
import Table from '@ckeditor/ckeditor5-table/src/table';
import TableToolbar from '@ckeditor/ckeditor5-table/src/tabletoolbar';
import Alignment from '@ckeditor/ckeditor5-alignment/src/alignment';   //新增语句
export default class ClassicEditor extends ClassicEditorBase {}

// Plugins to include in the build.
ClassicEditor.builtinPlugins = [
Essentials,
UploadAdapter,
Autoformat,
Bold,
Italic,
BlockQuote,
CKFinder,
EasyImage,
Heading,
Image,
ImageCaption,
ImageStyle,
ImageToolbar,
ImageUpload,
Link,
List,
MediaEmbed,
Paragraph,
PasteFromOffice,
Table,
TableToolbar,
Alignment                                                                    //新增语句
];

// Editor configuration.
ClassicEditor.defaultConfig = {
toolbar: {
items: [
'heading',
'|',
'alignment',                                                 //新增语句
'bold',
'italic',
'link',
'bulletedList',
'numberedList',
'imageUpload',
'blockQuote',
'insertTable',
'mediaEmbed',
'undo',
'redo'
]
},
image: {
toolbar: [
'imageStyle:full',
'imageStyle:side',
'|',
'imageTextAlternative'
]
},
table: {
contentToolbar: [
'tableColumn',
'tableRow',
'mergeTableCells'
]
},
// This value must be kept in sync with the language defined in webpack.config.js.
language: 'en'
};

最后运行语句重新build

npm run build

最后生成的打包好的文件存在于build目录下，

在初始化代码中加入居左，居中，居右的属性

如下图所示：