Underline a character in the item text in JavaScript Context Menu control

06 Jun 2023 / 1 minute to read

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

Source

Preview

app.ts

index.html

styles.css

import { ContextMenu, MenuItemModel, ContextMenuModel, MenuEventArgs } from '@syncfusion/ej2-navigations';
import { enableRipple } from '@syncfusion/ej2-base';

enableRipple(true);

//Initialize menu items.
let menuItems: MenuItemModel[] = [
    {
        text: 'Cut'
    },
    {
        text: 'Copy'
    },
    {
        text: 'Paste'
    }];

// Initialize ContextMenu options.
let menuOptions: ContextMenuModel = {
        target: '#target',
        items: menuItems,
        beforeItemRender: (args: MenuEventArgs) => {
            if (args.item.text === 'Copy') {
                // To underline a particular character.
                args.element.innerHTML = '<u>C</u>opy';
            }
        }
};
// Initialize ContextMenu component.
let menuObj: ContextMenu = new ContextMenu(menuOptions, '#contextmenu');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>Essential JS 2</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
    <meta name="description" content="Essential JS 2" />
    <meta name="author" content="Syncfusion" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-lists/styles/material.css" rel="stylesheet" />

    <!--style reference from app-->
    <link href="styles.css" rel="stylesheet" />

    <!--system js reference and configuration-->
    <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='loader'>LOADING....</div>
    <div id='container'>
        <div id="target">Right click / Touch hold to open the ContextMenu</div> 
        <ul id="contextmenu"></ul>
    </div>
</body>
</html>

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

#container {
  visibility: hidden;
}

.list {
  display: none;
}

#target {
  border: 1px dashed;
  height: 150px;
  padding: 10px;
  position: relative;
  text-align: justify;
  color: gray;
  user-select: none;
}