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Enable/Disable Toolbar Item in JavaScript FileManager control

The toolbar items can be enabled/disabled by specifying the items in enableToolbarItems or disableToolbarItems methods respectively.

The following example shows enabling and disabling toolbar items on button click.

Source
Preview
app.ts
index.html
index.css
import { FileManager, Toolbar, NavigationPane, DetailsView } from '@syncfusion/ej2-filemanager';

FileManager.Inject(Toolbar, NavigationPane, DetailsView)

let hostUrl: string = 'https://ej2-aspcore-service.azurewebsites.net/';
// initialize File Manager component
let filemanagerInstance: FileManager = new FileManager({
    ajaxSettings: {
        url: hostUrl + 'api/FileManager/FileOperations',
        getImageUrl: hostUrl + 'api/FileManager/GetImage',
        uploadUrl: hostUrl + 'api/FileManager/Upload',
        downloadUrl: hostUrl + 'api/FileManager/Download'
    },
    height: "330px"
});

// render initialized FileManager
filemanagerInstance.appendTo('#filemanager');

// Click event for enable button
document.getElementById("enable").onclick = function(args) {
    // Enable new folder toolbar item
    filemanagerInstance.enableToolbarItems(["newfolder"]);
}

// Click event for enable button
document.getElementById("disable").onclick = function(args) {
    // Disable new folder toolbar item
    filemanagerInstance.disableToolbarItems(["newfolder"]);
}
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Essential JS 2 File Manager</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 File Manager Component" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-base/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-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-layouts/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-filemanager/styles/material.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="filemanager"></div>
    <button id="enable" class="e-btn e-success">Enable New Folder toolbar item</button>
    <button id="disable" class="e-btn e-danger">Disable New Folder toolbar item</button>
</body>
</html>
#enable {
  position: relative;
  left: 20%;
  top: 10px;
}

#disable {
  position: relative;
  left: 30%;
  top: 10px;
}