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Enable or disable context menu items in JavaScript ContextMenu control

14 Apr 2021 / 1 minute to read

You can enable and disable the menu items using the enableItems method in ContextMenu. To enable menuItems, set the enable property in argument to true and vice-versa.

In the following example, the Display Settings in parent items and Medium icons in sub menu items are disabled.

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app.ts
index.html
styles.css
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import { ContextMenu, MenuItemModel, ContextMenuModel, BeforeOpenCloseMenuEventArgs } from '@syncfusion/ej2-navigations';
import { enableRipple } from '@syncfusion/ej2-base';
enableRipple(true);

//ContextMenu items definition
let menuItems: MenuItemModel[] = [
    {
        text: 'View',
        items: [
          {
            text: 'Large icons'
          },
          {
            text: 'Medium icons'
          },
          {
            text: 'Small icons'
          }
        ]
    },
    {
        text: 'Sort By'
    },
    {
        text: 'Refresh'
    },
    {
        separator: true
    },
    {
        text: 'New'
    },
    {
        separator: true
    },
    {
        text: 'Display Settings'
    },
    {
        text: 'Personalize'
    }];

//ContextMenu model definition
let menuOptions: ContextMenuModel = {
    target: '#target',
    items: menuItems,
    beforeOpen: (args: BeforeOpenCloseMenuEventArgs) => {
      menuObj.enableItems(['Medium icons'], false);
    }
};

let menuObj: ContextMenu = new ContextMenu(menuOptions, '#contextmenu');

menuObj.enableItems(['Display Settings'], false);
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<!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/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" />

    <!--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'>
        <!--target element-->
        <div id="target">Right click / Touch hold to open the ContextMenu</div>
        <!--element which is going to render-->
        <ul id="contextmenu"></ul>
    </div>
</body>

</html>
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.shortcut {
    float: right;
    font-size: 10px;
    opacity: 0.5;
    padding-left: 50px;
}

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

#container {
  visibility: hidden;
}

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

To disable sub menu items, use the beforeOpen event.