Underline a character in the item text in JavaScript DropDownButton control

08 May 2023 / 1 minute to read

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

In the following example, C is underlined in the text Copy.

Source

Preview

app.ts

index.html

styles.css

import { DropDownButton, DropDownButtonModel, ItemModel, MenuEventArgs } from '@syncfusion/ej2-splitbuttons';
import { enableRipple } from '@syncfusion/ej2-base';

enableRipple(true);

// Initialize action items.
let items: ItemModel[] = [
    {
        text: 'Cut'
    },
    {
        text: 'Copy'
    },
    {
        text: 'Paste'
    }];

// Initialize DropDownButton options.
let ddbOption: DropDownButtonModel = {
  items: items,
  beforeItemRender: (args: MenuEventArgs) => {
    if (args.item.text === 'Copy') {
        //To underline a particular text.
        args.element.innerHTML = '<u>C</u>opy';
    }
}
}
// Initialize the DropDownButton component.
let drpDownBtn: DropDownButton = new DropDownButton(ddbOption);

// Render initialized DropDownButton.
drpDownBtn.appendTo('#element');

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

<head>
            
    <title>EJ2 DropDownButton</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="//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-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="styles.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='loader'>LOADING....</div>
    <div id='container'>
        <button id='element'>Clipboard</button>
    </div>
</body>

</html>

#container {
    visibility: hidden;
}

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