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Underline a character in the item text

To underline a particular character in a text, it can be handled in beforeItemRender event by adding <u> tag in between the text and given as innerHTML in li rendering.

Source
Preview
index.tsx
index.html
index.css
index.jsx
import { enableRipple } from '@syncfusion/ej2-base';
import { ContextMenuComponent, MenuEventArgs, MenuItemModel } from '@syncfusion/ej2-react-navigations';
import * as React from 'react';
import * as ReactDom from 'react-dom';

enableRipple(true);

class App extends React.Component {
  private menuItems: MenuItemModel[] = [
    {
        text: 'Cut'
    },
    {
        text: 'Copy'
    },
    {
        text: 'Paste'
    }];

  public itemBeforeEvent: any = (args: MenuEventArgs) => {
      if (args.item.text === 'Copy') {
        args.element.innerHTML = '<u>C</u>opy';
      }
  }

  public render() {
    return (
            <div className="container">
              <div id='target'>Right click / Touch hold to open the ContextMenu</div>
              <ContextMenuComponent id='contextmenu' target='#target' items={this.menuItems} beforeItemRender={this.itemBeforeEvent}/>
           </div>
        );
    }
}

ReactDom.render(<App />,document.getElementById('element'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React ContextMenu</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 for React Components" />
    <meta name="author" content="Syncfusion" />
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='element'>
        <div id='loader'>Loading....</div>
    </div>
</body>

</html>
#loader {
	color: #008cff;
	height: 40px;
	left: 45%;
	position: absolute;
	top: 45%;
	width: 30%;
}

#target {
	border: 1px dashed;
	height: 150px;
	padding: 10px;
	position: relative;
	text-align: justify;
	color: gray;
	user-select: none;
}
import { enableRipple } from '@syncfusion/ej2-base';
import { ContextMenuComponent } from '@syncfusion/ej2-react-navigations';
import * as React from 'react';
import * as ReactDom from 'react-dom';
enableRipple(true);
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.menuItems = [
            {
                text: 'Cut'
            },
            {
                text: 'Copy'
            },
            {
                text: 'Paste'
            }
        ];
        this.itemBeforeEvent = (args) => {
            if (args.item.text === 'Copy') {
                args.element.innerHTML = '<u>C</u>opy';
            }
        };
    }
    render() {
        return (<div className="container">
              <div id='target'>Right click / Touch hold to open the ContextMenu</div>
              <ContextMenuComponent id='contextmenu' target='#target' items={this.menuItems} beforeItemRender={this.itemBeforeEvent}/>
           </div>);
    }
}
ReactDom.render(<App />, document.getElementById('element'));