Insert Table in EJ2 JavaScript Markdown Editor Control

22 Mar 202520 minutes to read

To enable the table insertion feature, add the CreateTable option to the toolbar items. Once added, users can click the Insert Table icon in the toolbar to insert a table into the editor.

By default, when a table is inserted, it consists of:

  • 2 rows and 2 columns
  • A table header row

This ensures that users can start formatting and adding content immediately.

ej.base.enableRipple(true);

var textArea;
var mdsource;
var htmlPreview;

var editor = new ej.richtexteditor.RichTextEditor({
  value: `In Rich Text Editor, you click the toolbar buttons to format the words and the changes are visible immediately. Markdown is not like that. When you format the word in Markdown format, you need to add Markdown syntax to the word to indicate which words and phrases should look different from each other. Rich Text Editor supports markdown editing when the editorMode set as **markdown** and using both *keyboard interaction* and *toolbar action*, you can apply the formatting to text. You can add our own custom formation syntax for the Markdown formation, [sample link](https://ej2.syncfusion.com/home/). The third-party library <b>Marked</b> is used in this sample to convert markdown into HTML content.`,
  height: 250,
  editorMode: 'Markdown',
  toolbarSettings: {
    items: [
      'CreateTable',
      {
        tooltipText: 'Preview',
        template:
          '<button id="preview-code" class="e-tbar-btn e-control e-btn e-icon-btn"  aria-label="Preview Code">' +
          '<span class="e-btn-icon e-md-preview e-icons"></span></button>',
      },
    ],
  },
  created: function () {
    textArea = editor.contentModule.getEditPanel();
    textArea.addEventListener('keyup', function (e) {
      markdownConversion();
    });
    mdsource = document.getElementById('preview-code');
    mdsource.addEventListener('click', function (e) {
      fullPreview();
      if (e.currentTarget.classList.contains('e-active')) {
        editor.disableToolbarItem(['CreateTable']);
      } else {
        editor.enableToolbarItem(['CreateTable']);
      }
    });
  },
});
editor.appendTo('#editor');

function markDownConversion() {
  if (mdsource.classList.contains('e-active')) {
    var id = editor.getID() + 'html-view';
    var htmlPreview = document.body.querySelector('#editorhtml-preview');
    htmlPreview.innerHTML = marked(
      editor.contentModule.getEditPanel().value
    );
  }
}

function fullPreview(e) {
  var id = editor.getID() + 'html-preview';
  var htmlPreview = editor.element.querySelector('#' + id);
  var previewTextArea = editor.element.querySelector('.e-rte-content');
  if (mdsource.classList.contains('e-active')) {
    mdsource.classList.remove('e-active');
    mdsource.parentElement.title = 'Preview';
    textArea.style.display = 'block';
    htmlPreview.style.display = 'none';
    previewTextArea.style.overflow = 'hidden';
  } else {
    mdsource.classList.add('e-active');
    if (!htmlPreview) {
      htmlPreview = ej.base.createElement('div', {
        className: 'e-content e-pre-source',
      });
      htmlPreview.id = id;
      textArea.parentNode.appendChild(htmlPreview);
      previewTextArea.style.overflow = 'auto';
    }
    if (previewTextArea.style.overflow === 'hidden') {
      previewTextArea.style.overflow = 'auto';
    }
    textArea.style.display = 'none';
    htmlPreview.style.display = 'block';
    htmlPreview.innerHTML = marked(
      editor.contentModule.getEditPanel().value
    );
    mdsource.parentElement.title = 'Code View';
  }
}

loadExternalFile();
// Dynamically load the marked.js file
function loadExternalFile() {
  var script = document.createElement('script');
  script.src = 'https://cdnjs.cloudflare.com/ajax/libs/marked/0.3.19/marked.js';
  document.getElementsByTagName('head')[0].appendChild(script);
}
<!DOCTYPE html><html lang="en"><head>
    <title>Essential JS 2 Rich Text Editor</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-richtexteditor/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-popups/styles/material.css" rel="stylesheet">
     <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
   
<script src="https://cdn.syncfusion.com/ej2/30.1.37/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="editor"></div>
    </div>
    <style>
        .e-richtexteditor textarea.e-content {
            float: left;
            border-right: 1px solid rgba(0, 0, 0, 0.12);
        }
        .e-richtexteditor .e-rte-content .e-content{
            min-height: 150px;
        }
    
        .e-richtexteditor .e-rte-content {
            overflow: hidden;
        }
    
        .e-icon-btn.e-active .e-md-preview::before {
            content: '\e350';
        }
    
        .e-icon-btn .e-md-preview::before {
            content: '\e345';
        }
    
        .e-rte-content .e-content {
            float: right;
            width: 50%;
            overflow: auto;
            height: inherit;
            padding: 8px;
            height: 100%;
        }
    
        .e-rte-content .e-content.e-pre-source {
            width: 100%;
        }
    
        .highcontrast .e-richtexteditor textarea.e-content {
            border-right: 1px solid #fff;
        }
    
        .sb-header {
            z-index: 100;
        }
    </style>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Changing default content

By default, when you insert a table, it comes with predefined column headers and structure. However, you can customize the table’s default content, including the heading and column names, to match your requirements.

The following example demonstrates how to customize the table content in the Markdown Editor:

ej.base.enableRipple(true);

var textArea;
var mdsource;
var htmlPreview;

ej.base.L10n.load({
    'en-US': {
        'richtexteditor': {
            'TableHeadingText': 'Header',
            'TableColText': 'Cell'
        }
    }
});

var editor = new ej.richtexteditor.RichTextEditor({
  value: `In Rich Text Editor, you click the toolbar buttons to format the words and the changes are visible immediately. Markdown is not like that. When you format the word in Markdown format, you need to add Markdown syntax to the word to indicate which words and phrases should look different from each other. Rich Text Editor supports markdown editing when the editorMode set as **markdown** and using both *keyboard interaction* and *toolbar action*, you can apply the formatting to text. You can add our own custom formation syntax for the Markdown formation, [sample link](https://ej2.syncfusion.com/home/). The third-party library <b>Marked</b> is used in this sample to convert markdown into HTML content.`,
  height: 250,
  editorMode: 'Markdown',
  toolbarSettings: {
    items: [
      'CreateTable',
      {
        tooltipText: 'Preview',
        template:
          '<button id="preview-code" class="e-tbar-btn e-control e-btn e-icon-btn"  aria-label="Preview Code">' +
          '<span class="e-btn-icon e-md-preview e-icons"></span></button>',
      },
    ],
  },
  created: function () {
    textArea = editor.contentModule.getEditPanel();
    textArea.addEventListener('keyup', function (e) {
      markdownConversion();
    });
    mdsource = document.getElementById('preview-code');
    mdsource.addEventListener('click', function (e) {
      fullPreview();
      if (e.currentTarget.classList.contains('e-active')) {
        editor.disableToolbarItem(['CreateTable']);
      } else {
        editor.enableToolbarItem(['CreateTable']);
      }
    });
  },
});
editor.appendTo('#editor');

function markDownConversion() {
  if (mdsource.classList.contains('e-active')) {
    var id = editor.getID() + 'html-view';
    var htmlPreview = document.body.querySelector('#editorhtml-preview');
    htmlPreview.innerHTML = marked(
      editor.contentModule.getEditPanel().value
    );
  }
}

function fullPreview(e) {
  var id = editor.getID() + 'html-preview';
  var htmlPreview = editor.element.querySelector('#' + id);
  var previewTextArea = editor.element.querySelector('.e-rte-content');
  if (mdsource.classList.contains('e-active')) {
    mdsource.classList.remove('e-active');
    mdsource.parentElement.title = 'Preview';
    textArea.style.display = 'block';
    htmlPreview.style.display = 'none';
    previewTextArea.style.overflow = 'hidden';
  } else {
    mdsource.classList.add('e-active');
    if (!htmlPreview) {
      htmlPreview = ej.base.createElement('div', {
        className: 'e-content e-pre-source',
      });
      htmlPreview.id = id;
      textArea.parentNode.appendChild(htmlPreview);
      previewTextArea.style.overflow = 'auto';
    }
    if (previewTextArea.style.overflow === 'hidden') {
      previewTextArea.style.overflow = 'auto';
    }
    textArea.style.display = 'none';
    htmlPreview.style.display = 'block';
    htmlPreview.innerHTML = marked(
      editor.contentModule.getEditPanel().value
    );
    mdsource.parentElement.title = 'Code View';
  }
}

loadExternalFile();
// Dynamically load the marked.js file
function loadExternalFile() {
  var script = document.createElement('script');
  script.src = 'https://cdnjs.cloudflare.com/ajax/libs/marked/0.3.19/marked.js';
  document.getElementsByTagName('head')[0].appendChild(script);
}
<!DOCTYPE html><html lang="en"><head>
    <title>Essential JS 2 Rich Text Editor</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-richtexteditor/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-popups/styles/material.css" rel="stylesheet">
     <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
   
<script src="https://cdn.syncfusion.com/ej2/30.1.37/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
        <div id="editor"></div>
    </div>
    <style>
        .e-richtexteditor textarea.e-content {
            float: left;
            border-right: 1px solid rgba(0, 0, 0, 0.12);
        }
        .e-richtexteditor .e-rte-content .e-content{
            min-height: 150px;
        }
    
        .e-richtexteditor .e-rte-content {
            overflow: hidden;
        }
    
        .e-icon-btn.e-active .e-md-preview::before {
            content: '\e350';
        }
    
        .e-icon-btn .e-md-preview::before {
            content: '\e345';
        }
    
        .e-rte-content .e-content {
            float: right;
            width: 50%;
            overflow: auto;
            height: inherit;
            padding: 8px;
            height: 100%;
        }
    
        .e-rte-content .e-content.e-pre-source {
            width: 100%;
        }
    
        .highcontrast .e-richtexteditor textarea.e-content {
            border-right: 1px solid #fff;
        }
    
        .sb-header {
            z-index: 100;
        }
    </style>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>