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Getting Started

This section explains how to create and configure the simple uploader component.

Dependencies

The following are the dependencies required to use the uploader component in your application:

|-- @syncfusion/ej2-inputs
    |-- @syncfusion/ej2-base
    |-- @syncfusion/ej2-buttons

Set up of the development environment

To get started with the uploader component, you have to clone the Essential JS 2 quickstart project and install the npm packages by using the following commands.

git clone https://github.com/syncfusion/ej2-quickstart.git quickstart
cd quickstart
npm install

The project is preconfigured with common settings (src/styles/styles.css, system.config.js ) to start all the Essential JS 2 components.

Initialize the uploader

The uploader can be initialized through input tag. Add the HTML input element that needs to be initialized as a uploader in index.html.

[src/index.html]

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

<head>
    <title>Essential JS 2 Uploader component</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://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />

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

    <!--system js reference and configuration-->
    <script src="node_modules/systemjs/dist/system.src.js" type="text/javascript"></script>
    <script src="system.config.js" type="text/javascript"></script>
</head>

<body>
    <div id='container' style="margin:0 auto; width:300px;">
        <!--element which is going to render the Uploader-->
        <input type="file" id='fileupload' />
    </div>

</body>

</html>

The Custom Resource Generator (CRG) is an online web tool, which can be used to generate the custom script and styles for a set of specific components. This web tool is useful to combine the required component scripts and styles in a single file.

Now, import the uploader component to your app.ts and initialize it to the element #fileupload as follows.

[src/app/app.ts]

// initialize Uploader component
var uploadObject = new ej.inputs.Uploader();
// render initialized Uploader
uploadObject.appendTo('#fileupload');

Run the application

After completing the configuration to render the basic uploader, run the following command to display the output in your default browser.

npm run start

From v16.2.41 version, the Essential JS2 AJAX library has been integrated for uploader server requests. Hence, use the third party promise library like blue-bird to use the uploader in Internet Explorer.

The following example illustrates the output in your browser.

Source
Preview
index.html
<!DOCTYPE html><html lang="en"><head>
    <title>Essential JS 2 UPloader</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Essential JS 2 Uploader 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">
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
</head>
<body>
    
        <div id="container" class="fileupload">
            <input type="file" id="fileupload" name="UploadFiles">
        </div>
    

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

Adding drop area

By default, the uploader component allows to upload files by drag the files from file explorer, and drop into the drop area. You can configure any other external element as drop target using dropArea property.

In the following sample, drop target is configured.

Source
Preview
index.js
index.html
index.css
// initialize Uploader component
var uploadObject = new ej.inputs.Uploader({
    autoUpload: false,
    dropArea: document.getElementById('droparea')
});

// render initialized Uploader
uploadObject.appendTo('#fileupload');
<!DOCTYPE html><html lang="en"><head>
    <title>Essential JS 2 Uploader</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Essential JS 2 Uploader 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">
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container" style="width: 90%">
        <div id="droparea">
            Drop files here to upload
        </div>
        <div id="uploadfile">
            <input type="file" id="fileupload" name="UploadFiles">
        </div>
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>
#container {
  visibility: hidden;
  padding-left: 5%;
  width: 100%;
}
#loader {
  color: #008cff;
  font-family: 'Helvetica Neue','calibiri';
  font-size: 14px;
  height: 40px;
  left: 45%;
  position: absolute;
  top: 45%;
  width: 30%;
}
.fileupload {
  margin: 20px auto;
  width: 400px;
}
#droparea {
  padding: 50px 25px;
  margin: 30px auto;
  border: 1px solid #c3c3c3;
  text-align: center;
  width: 20%;
  display: inline-flex;
}
.e-file-select,
.e-file-drop {
  display: none;
}
body .e-upload-drag-hover {
  outline: 2px dashed brown;
}
#uploadfile {  
  width: 60%;
  display: inline-flex;
  margin-left: 5%;
}

Configure asynchronous settings

The uploader component process the files to upload in Asynchronous mode by default. Define the properties saveUrl and removeUrl to handle the save and remove action as follows.

Source
Preview
index.js
index.html
// initialize Uploader component
var uploadObject = new ej.inputs.Uploader({
    asyncSettings: {
        saveUrl: 'https://aspnetmvc.syncfusion.com/services/api/uploadbox/Save',
        removeUrl: 'https://aspnetmvc.syncfusion.com/services/api/uploadbox/Remove'
    }
});

// render initialized Uploader
uploadObject.appendTo('#fileupload');
<!DOCTYPE html><html lang="en"><head>
    <title>Essential JS 2 Uploader</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Essential JS 2 Uploader 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">
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
</head>
<body>
    
        <div id="container">
            <input type="file" id="fileupload" name="UploadFiles">
        </div>
    

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

Handle success and failed upload

You can handle the success and failure actions using the success and failure  events. To handle these event, define the function and assign it to corresponding event as follows.

Source
Preview
index.js
index.html
// initialize Uploader component
var uploadObject = new ej.inputs.Uploader({
    asyncSettings: {
        saveUrl: 'https://aspnetmvc.syncfusion.com/services/api/uploadbox/Save',
        removeUrl: 'https://aspnetmvc.syncfusion.com/services/api/uploadbox/Remove'
    },
    success: onUploadSuccess,
    failure: onUploadFailure
});
// render initialized Uploader
uploadObject.appendTo('#fileupload');

function onUploadSuccess(args) {
  if (args.operation === 'upload') {
    console.log('File uploaded successfully');
  }
}
function onUploadFailure(args) {
  console.log('File failed to upload');
}
<!DOCTYPE html><html lang="en"><head>
    <title>Essential JS 2 Uploader</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Essential JS 2 Uploader 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">
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
</head>
<body>
    
        <div id="container">
            <input type="file" id="fileupload" name="UploadFiles">
        </div>
    

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

See Also