Create mnemonic ui in menuitem in EJ2 JavaScript Menu control

2 May 20234 minutes to read

A particular character in a text can be underlined in the beforeItemRender event by adding <u> tag in between the text and assign the innerHTML to the li element.

In the following example, the first character in File, Open, and Save menu items are underlined.

ej.base.enableRipple(true);

//Menu datasource
var menuItems = [
    {
        text: 'File',
        iconCss: 'em-icons e-file',
        items: [
            { text: 'Open', iconCss: 'em-icons e-open' },
            { text: 'Save', iconCss: 'e-icons e-save' },
            { separator: true },
            { text: 'Exit' }
        ]
    },
    {
        text: 'Edit',
        iconCss: 'em-icons e-edit',
        items: [
            { text: 'Cut', iconCss: 'em-icons e-cut' },
            { text: 'Copy', iconCss: 'em-icons e-copy' },
            { text: 'Paste', iconCss: 'em-icons e-paste' }
        ]
    },
    { text: 'Format' },
    { text: 'View' },
    { text: 'Bookmarks' },
    { text: 'Tools' },
    { separator: true },
    { text: 'Help' }
];

// Initialize Menu component.
var menuObj = new ej.navigations.Menu({
    items: menuItems,
    beforeItemRender: function (args) {
        if (['File', 'Open', 'Save'].indexOf(args.item.text) > -1) {
            // To underline a First character.
            var underlinedText = '<u>' + args.item.text.slice(0, 1) + '</u>' + args.item.text.slice(1);
            args.element.innerHTML = args.element.innerHTML.replace(args.item.text, underlinedText);
        }
    }
}, '#menu');
<!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="https://cdn.syncfusion.com/ej2/29.2.4/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.2.4/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.2.4/ej2-navigations/styles/material.css" rel="stylesheet">

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

    <!--system js reference and configuration-->
    
    
<script src="https://cdn.syncfusion.com/ej2/29.2.4/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">
        <ul id="menu"></ul>
    </div>    



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