Achieve File Upload Programmatically in JavaScript (ES5) Uploader control

28 Jul 2021 / 1 minute to read

You can upload a file programmatically using the upload method. Get the selected files data from the getFilesData public method in uploader.

The upload method behaves differently based on its arguments.

If this method receives any files as arguments, those files only start to upload.
If it has no argument, all the selected files start to upload.

Source

Preview

index.js

index.html

index.css

ej.base.enableRipple(true);

//Initialize the control by preload files
var uploadObj = new ej.inputs.Uploader({
    autoUpload: false,
    asyncSettings: {
        saveUrl: 'https://ej2.syncfusion.com/services/api/uploadbox/Save',
        removeUrl: 'https://ej2.syncfusion.com/services/api/uploadbox/Remove'
    }
});
uploadObj.appendTo('#fileupload');

document.getElementById('first').onclick = function (args) {
    uploadObj.upload(uploadObj.getFilesData()[0]);
};

document.getElementById('full').onclick = function (args) {
    uploadObj.upload(uploadObj.getFilesData());
};

<!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">
            <div class="control_wrapper">
                <!-- Initialize Uploader -->
                <input type="file" name="UploadFiles" id="fileupload">
            </div>
            <span style=" padding-left: 40px; margin-top: 30px">
              <button id="first" class="e-btn e-control">Upload first file</button>
            </span>
            <span style=" padding-left: 40px; margin-top: 30px">
              <button id="full" class="e-btn e-control">Upload all files</button>
            </span>
        </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;
}

#loader {
  color: #008cff;
  font-family: 'Helvetica Neue','calibiri';
  font-size: 14px;
  height: 40px;
  left: 45%;
  position: absolute;
  top: 45%;
  width: 30%;
}
.control_wrapper {
  max-width: 500px;
  margin: auto;
}
.e-upload {
  width: 100%;
  position: relative;
  margin-top: 15px;
  margin-bottom: 15px;
}
.e-upload-actions {
display: none;
}
.e-btn {
  text-transform: none;
}

You can also explore JavaScript File Upload feature tour page for its groundbreaking features. You can also explore our JavaScript File Upload example to understand how to browse the files which you want to upload to the server.