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Drag and drop feature in javascript

Tags:

javascript

drag-and-drop

Could you help me please?

I would like to know how to support my website by adding a drag and drop feature using JavaScript. If anyone has useful references or examples; because I am totally blind in this area.

Thank you :)

The things that I have to do drag and drop could be a div or predifined object.

like image 835
Cooper kein Avatar asked Jan 03 '11 15:01

Cooper kein

People also ask

How drag and drop works in JavaScript?

The HTML Drag and Drop API relies on the DOM's event model to get information on what is being dragged or dropped and to update that element on drag or drop. With JavaScript event handlers, you can turn any element into a draggable item or an item that can be dropped into.

What is drag and drop features?

In computer graphical user interfaces, drag and drop is a pointing device gesture in which the user selects a virtual object by "grabbing" it and dragging it to a different location or onto another virtual object.

What is drag and drop in HTML?

HTML drag-and-drop uses the DOM event model and drag events inherited from mouse events . A typical drag operation begins when a user selects a draggable element, drags the element to a droppable element, and then releases the dragged element.

3 Answers

If you are talking about file uploads with drag and drop I recommend using my library:

http://www.dropzonejs.com

It also supports image previews of dropped files and has a fallback for older browsers.

like image 100
enyo Avatar answered Oct 02 '22 07:10

enyo

Here is the simple code for dragging a/many files from your desktop to a web page and uploading on drop of the file.

Please note that it includes HTML5 options and so IE9 and lower doesn't support this.

$(document).ready(function() {
    var dropbox = document.getElementById("dropbox")

    // init event handlers
    dropbox.addEventListener("dragenter", dragEnter, false);
    dropbox.addEventListener("dragexit", dragExit, false);
    dropbox.addEventListener("dragover", dragOver, false);
    dropbox.addEventListener("drop", drop, false);

    // init the widgets
    $("#progressbar").progressbar();
});

function dragEnter(evt) {
    evt.stopPropagation();
    evt.preventDefault();
}

function dragExit(evt) {
    evt.stopPropagation();
    evt.preventDefault();
}

function dragOver(evt) {
    evt.stopPropagation();
    evt.preventDefault();
}

function drop(evt) {
    evt.stopPropagation();
    evt.preventDefault();

    var files = evt.dataTransfer.files;
    var count = files.length;

    // Only call the handler if 1 or more files was dropped.
    if (count > 0)
        handleFiles(files);
}


function handleFiles(files) {
    var file = files[0];
    document.getElementById("droplabel").innerHTML = "Processing " + file.name;




    //  var sampleText = document.getElementById("sampleText").value;

     // var sampleFile = document.getElementById("sampleFile").files[0];

      var formdata = new FormData();

      formdata.append("sampleText", "ppppppp");

      formdata.append("sampleFile", file);

      var xhr = new XMLHttpRequest();       

      xhr.open("POST","/EHF/dataentry?", true);

      xhr.send(formdata);

      xhr.onload = function(e) {

          if (this.status == 200) {

             alert(this.responseText);

          }

      };   



    var reader = new FileReader();

    // init the reader event handlers
    reader.onprogress = handleReaderProgress;
    reader.onloadend = handleReaderLoadEnd;

    // begin the read operation
    reader.readAsDataURL(file);
}

function handleReaderProgress(evt) {
    if (evt.lengthComputable) {
        var loaded = (evt.loaded / evt.total);

        $("#progressbar").progressbar({ value: loaded * 100 });
    }
}

function handleReaderLoadEnd(evt) {
    $("#progressbar").progressbar({ value: 100 });

    var img = document.getElementById("preview");
    img.src = evt.target.result;
}


    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <link rel="stylesheet" type="text/css" href="dndimg.css">
    <link rel="stylesheet" type="text/css" href="jquery-ui-1.8.1.custom.css">
    <script src="http://www.google.com/jsapi?key=ABQIAAAADYbHHQrNWPElNtE4hn2g1hQhn5tTlmnhbGVHENfXgw8ik0kvARSWpfuAdtdt1KqinQpUokxB7SpcsQ"
            type="text/javascript"></script>
    <script type="text/javascript">
        google.load("jquery", "1");
        google.load("jqueryui", "1");
    </script>
    <script type="text/javascript" src="draganddrop.js"></script>
</head>
<body>
<div id="dropbox"><span id="droplabel">Drop file here...</span>
    <div id="progressbar"></div>
</div>

<br/>
<img id="preview" src="" alt="[ preview will display here ]"/>
</body>
</html>


#dropbox {
    width: 425px;
    height: 300px;
    border: 2px solid #DDD;
    -moz-border-radius: 8px;
    -webkit-border-radius: 8px;
    background-color: #FEFFEC;
    text-align: center;
    color: #BBB;
    font-size: 2em;
    font-family: Arial, sans-serif;
}

#progressbar {
    margin-left: 20px;
    margin-right: 20px;
    position: relative;
    top: 75%;
}

#droplabel {
    position: relative;
    top: 40%;
}


/*
* jQuery UI CSS Framework
* Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
* Dual licensed under the MIT (MIT-LICENSE.txt) and GPL (GPL-LICENSE.txt) licenses.
*/

/* Layout helpers
----------------------------------*/
.ui-helper-hidden { display: none; }
.ui-helper-hidden-accessible { position: absolute; left: -99999999px; }
.ui-helper-reset { margin: 0; padding: 0; border: 0; outline: 0; line-height: 1.3; text-decoration: none; font-size: 100%; list-style: none; }
.ui-helper-clearfix:after { content: "."; display: block; height: 0; clear: both; visibility: hidden; }
.ui-helper-clearfix { display: inline-block; }
/* required comment for clearfix to work in Opera \*/
* html .ui-helper-clearfix { height:1%; }
.ui-helper-clearfix { display:block; }
/* end clearfix */
.ui-helper-zfix { width: 100%; height: 100%; top: 0; left: 0; position: absolute; opacity: 0; filter:Alpha(Opacity=0); }


/* Interaction Cues
----------------------------------*/
.ui-state-disabled { cursor: default !important; }


/* Icons
----------------------------------*/

/* states and images */
.ui-icon { display: block; text-indent: -99999px; overflow: hidden; background-repeat: no-repeat; }


/* Misc visuals
----------------------------------*/

/* Overlays */
.ui-widget-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }


/*
* jQuery UI CSS Framework
* Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
* Dual licensed under the MIT (MIT-LICENSE.txt) and GPL (GPL-LICENSE.txt) licenses.
* To view and modify this theme, visit http://jqueryui.com/themeroller/?ffDefault=Lucida%20Grande,%20Lucida%20Sans,%20Arial,%20sans-serif&fwDefault=bold&fsDefault=1.1em&cornerRadius=6px&bgColorHeader=deedf7&bgTextureHeader=03_highlight_soft.png&bgImgOpacityHeader=100&borderColorHeader=aed0ea&fcHeader=222222&iconColorHeader=72a7cf&bgColorContent=f2f5f7&bgTextureContent=04_highlight_hard.png&bgImgOpacityContent=100&borderColorContent=dddddd&fcContent=362b36&iconColorContent=72a7cf&bgColorDefault=d7ebf9&bgTextureDefault=02_glass.png&bgImgOpacityDefault=80&borderColorDefault=aed0ea&fcDefault=2779aa&iconColorDefault=3d80b3&bgColorHover=e4f1fb&bgTextureHover=02_glass.png&bgImgOpacityHover=100&borderColorHover=74b2e2&fcHover=0070a3&iconColorHover=2694e8&bgColorActive=3baae3&bgTextureActive=02_glass.png&bgImgOpacityActive=50&borderColorActive=2694e8&fcActive=ffffff&iconColorActive=ffffff&bgColorHighlight=ffef8f&bgTextureHighlight=03_highlight_soft.png&bgImgOpacityHighlight=25&borderColorHighlight=f9dd34&fcHighlight=363636&iconColorHighlight=2e83ff&bgColorError=cd0a0a&bgTextureError=01_flat.png&bgImgOpacityError=15&borderColorError=cd0a0a&fcError=ffffff&iconColorError=ffffff&bgColorOverlay=eeeeee&bgTextureOverlay=08_diagonals_thick.png&bgImgOpacityOverlay=90&opacityOverlay=80&bgColorShadow=000000&bgTextureShadow=04_highlight_hard.png&bgImgOpacityShadow=70&opacityShadow=30&thicknessShadow=7px&offsetTopShadow=-7px&offsetLeftShadow=-7px&cornerRadiusShadow=8px
*/


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----------------------------------*/
.ui-widget { font-family: Lucida Grande, Lucida Sans, Arial, sans-serif; font-size: 1.1em; }
.ui-widget .ui-widget { font-size: 1em; }
.ui-widget input, .ui-widget select, .ui-widget textarea, .ui-widget button { font-family: Lucida Grande, Lucida Sans, Arial, sans-serif; font-size: 1em; }
.ui-widget-content { border: 1px solid #dddddd; background: #f2f5f7 url(images/ui-bg_highlight-hard_100_f2f5f7_1x100.png) 50% top repeat-x; color: #362b36; }
.ui-widget-content a { color: #362b36; }
.ui-widget-header { border: 1px solid #aed0ea; background: #deedf7 url(images/ui-bg_highlight-soft_100_deedf7_1x100.png) 50% 50% repeat-x; color: #222222; font-weight: bold; }
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----------------------------------*/
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.ui-state-hover a, .ui-state-hover a:hover { color: #0070a3; text-decoration: none; }
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.ui-state-active a, .ui-state-active a:link, .ui-state-active a:visited { color: #ffffff; text-decoration: none; }
.ui-widget :active { outline: none; }

/* Interaction Cues
----------------------------------*/
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----------------------------------*/

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/* positioning */
.ui-icon-carat-1-n { background-position: 0 0; }
.ui-icon-carat-1-ne { background-position: -16px 0; }
.ui-icon-carat-1-e { background-position: -32px 0; }
.ui-icon-carat-1-se { background-position: -48px 0; }
.ui-icon-carat-1-s { background-position: -64px 0; }
.ui-icon-carat-1-sw { background-position: -80px 0; }
.ui-icon-carat-1-w { background-position: -96px 0; }
.ui-icon-carat-1-nw { background-position: -112px 0; }
.ui-icon-carat-2-n-s { background-position: -128px 0; }
.ui-icon-carat-2-e-w { background-position: -144px 0; }
.ui-icon-triangle-1-n { background-position: 0 -16px; }
.ui-icon-triangle-1-ne { background-position: -16px -16px; }
.ui-icon-triangle-1-e { background-position: -32px -16px; }
.ui-icon-triangle-1-se { background-position: -48px -16px; }
.ui-icon-triangle-1-s { background-position: -64px -16px; }
.ui-icon-triangle-1-sw { background-position: -80px -16px; }
.ui-icon-triangle-1-w { background-position: -96px -16px; }
.ui-icon-triangle-1-nw { background-position: -112px -16px; }
.ui-icon-triangle-2-n-s { background-position: -128px -16px; }
.ui-icon-triangle-2-e-w { background-position: -144px -16px; }
.ui-icon-arrow-1-n { background-position: 0 -32px; }
.ui-icon-arrow-1-ne { background-position: -16px -32px; }
.ui-icon-arrow-1-e { background-position: -32px -32px; }
.ui-icon-arrow-1-se { background-position: -48px -32px; }
.ui-icon-arrow-1-s { background-position: -64px -32px; }
.ui-icon-arrow-1-sw { background-position: -80px -32px; }
.ui-icon-arrow-1-w { background-position: -96px -32px; }
.ui-icon-arrow-1-nw { background-position: -112px -32px; }
.ui-icon-arrow-2-n-s { background-position: -128px -32px; }
.ui-icon-arrow-2-ne-sw { background-position: -144px -32px; }
.ui-icon-arrow-2-e-w { background-position: -160px -32px; }
.ui-icon-arrow-2-se-nw { background-position: -176px -32px; }
.ui-icon-arrowstop-1-n { background-position: -192px -32px; }
.ui-icon-arrowstop-1-e { background-position: -208px -32px; }
.ui-icon-arrowstop-1-s { background-position: -224px -32px; }
.ui-icon-arrowstop-1-w { background-position: -240px -32px; }
.ui-icon-arrowthick-1-n { background-position: 0 -48px; }
.ui-icon-arrowthick-1-ne { background-position: -16px -48px; }
.ui-icon-arrowthick-1-e { background-position: -32px -48px; }
.ui-icon-arrowthick-1-se { background-position: -48px -48px; }
.ui-icon-arrowthick-1-s { background-position: -64px -48px; }
.ui-icon-arrowthick-1-sw { background-position: -80px -48px; }
.ui-icon-arrowthick-1-w { background-position: -96px -48px; }
.ui-icon-arrowthick-1-nw { background-position: -112px -48px; }
.ui-icon-arrowthick-2-n-s { background-position: -128px -48px; }
.ui-icon-arrowthick-2-ne-sw { background-position: -144px -48px; }
.ui-icon-arrowthick-2-e-w { background-position: -160px -48px; }
.ui-icon-arrowthick-2-se-nw { background-position: -176px -48px; }
.ui-icon-arrowthickstop-1-n { background-position: -192px -48px; }
.ui-icon-arrowthickstop-1-e { background-position: -208px -48px; }
.ui-icon-arrowthickstop-1-s { background-position: -224px -48px; }
.ui-icon-arrowthickstop-1-w { background-position: -240px -48px; }
.ui-icon-arrowreturnthick-1-w { background-position: 0 -64px; }
.ui-icon-arrowreturnthick-1-n { background-position: -16px -64px; }
.ui-icon-arrowreturnthick-1-e { background-position: -32px -64px; }
.ui-icon-arrowreturnthick-1-s { background-position: -48px -64px; }
.ui-icon-arrowreturn-1-w { background-position: -64px -64px; }
.ui-icon-arrowreturn-1-n { background-position: -80px -64px; }
.ui-icon-arrowreturn-1-e { background-position: -96px -64px; }
.ui-icon-arrowreturn-1-s { background-position: -112px -64px; }
.ui-icon-arrowrefresh-1-w { background-position: -128px -64px; }
.ui-icon-arrowrefresh-1-n { background-position: -144px -64px; }
.ui-icon-arrowrefresh-1-e { background-position: -160px -64px; }
.ui-icon-arrowrefresh-1-s { background-position: -176px -64px; }
.ui-icon-arrow-4 { background-position: 0 -80px; }
.ui-icon-arrow-4-diag { background-position: -16px -80px; }
.ui-icon-extlink { background-position: -32px -80px; }
.ui-icon-newwin { background-position: -48px -80px; }
.ui-icon-refresh { background-position: -64px -80px; }
.ui-icon-shuffle { background-position: -80px -80px; }
.ui-icon-transfer-e-w { background-position: -96px -80px; }
.ui-icon-transferthick-e-w { background-position: -112px -80px; }
.ui-icon-folder-collapsed { background-position: 0 -96px; }
.ui-icon-folder-open { background-position: -16px -96px; }
.ui-icon-document { background-position: -32px -96px; }
.ui-icon-document-b { background-position: -48px -96px; }
.ui-icon-note { background-position: -64px -96px; }
.ui-icon-mail-closed { background-position: -80px -96px; }
.ui-icon-mail-open { background-position: -96px -96px; }
.ui-icon-suitcase { background-position: -112px -96px; }
.ui-icon-comment { background-position: -128px -96px; }
.ui-icon-person { background-position: -144px -96px; }
.ui-icon-print { background-position: -160px -96px; }
.ui-icon-trash { background-position: -176px -96px; }
.ui-icon-locked { background-position: -192px -96px; }
.ui-icon-unlocked { background-position: -208px -96px; }
.ui-icon-bookmark { background-position: -224px -96px; }
.ui-icon-tag { background-position: -240px -96px; }
.ui-icon-home { background-position: 0 -112px; }
.ui-icon-flag { background-position: -16px -112px; }
.ui-icon-calendar { background-position: -32px -112px; }
.ui-icon-cart { background-position: -48px -112px; }
.ui-icon-pencil { background-position: -64px -112px; }
.ui-icon-clock { background-position: -80px -112px; }
.ui-icon-disk { background-position: -96px -112px; }
.ui-icon-calculator { background-position: -112px -112px; }
.ui-icon-zoomin { background-position: -128px -112px; }
.ui-icon-zoomout { background-position: -144px -112px; }
.ui-icon-search { background-position: -160px -112px; }
.ui-icon-wrench { background-position: -176px -112px; }
.ui-icon-gear { background-position: -192px -112px; }
.ui-icon-heart { background-position: -208px -112px; }
.ui-icon-star { background-position: -224px -112px; }
.ui-icon-link { background-position: -240px -112px; }
.ui-icon-cancel { background-position: 0 -128px; }
.ui-icon-plus { background-position: -16px -128px; }
.ui-icon-plusthick { background-position: -32px -128px; }
.ui-icon-minus { background-position: -48px -128px; }
.ui-icon-minusthick { background-position: -64px -128px; }
.ui-icon-close { background-position: -80px -128px; }
.ui-icon-closethick { background-position: -96px -128px; }
.ui-icon-key { background-position: -112px -128px; }
.ui-icon-lightbulb { background-position: -128px -128px; }
.ui-icon-scissors { background-position: -144px -128px; }
.ui-icon-clipboard { background-position: -160px -128px; }
.ui-icon-copy { background-position: -176px -128px; }
.ui-icon-contact { background-position: -192px -128px; }
.ui-icon-image { background-position: -208px -128px; }
.ui-icon-video { background-position: -224px -128px; }
.ui-icon-script { background-position: -240px -128px; }
.ui-icon-alert { background-position: 0 -144px; }
.ui-icon-info { background-position: -16px -144px; }
.ui-icon-notice { background-position: -32px -144px; }
.ui-icon-help { background-position: -48px -144px; }
.ui-icon-check { background-position: -64px -144px; }
.ui-icon-bullet { background-position: -80px -144px; }
.ui-icon-radio-off { background-position: -96px -144px; }
.ui-icon-radio-on { background-position: -112px -144px; }
.ui-icon-pin-w { background-position: -128px -144px; }
.ui-icon-pin-s { background-position: -144px -144px; }
.ui-icon-play { background-position: 0 -160px; }
.ui-icon-pause { background-position: -16px -160px; }
.ui-icon-seek-next { background-position: -32px -160px; }
.ui-icon-seek-prev { background-position: -48px -160px; }
.ui-icon-seek-end { background-position: -64px -160px; }
.ui-icon-seek-start { background-position: -80px -160px; }
/* ui-icon-seek-first is deprecated, use ui-icon-seek-start instead */
.ui-icon-seek-first { background-position: -80px -160px; }
.ui-icon-stop { background-position: -96px -160px; }
.ui-icon-eject { background-position: -112px -160px; }
.ui-icon-volume-off { background-position: -128px -160px; }
.ui-icon-volume-on { background-position: -144px -160px; }
.ui-icon-power { background-position: 0 -176px; }
.ui-icon-signal-diag { background-position: -16px -176px; }
.ui-icon-signal { background-position: -32px -176px; }
.ui-icon-battery-0 { background-position: -48px -176px; }
.ui-icon-battery-1 { background-position: -64px -176px; }
.ui-icon-battery-2 { background-position: -80px -176px; }
.ui-icon-battery-3 { background-position: -96px -176px; }
.ui-icon-circle-plus { background-position: 0 -192px; }
.ui-icon-circle-minus { background-position: -16px -192px; }
.ui-icon-circle-close { background-position: -32px -192px; }
.ui-icon-circle-triangle-e { background-position: -48px -192px; }
.ui-icon-circle-triangle-s { background-position: -64px -192px; }
.ui-icon-circle-triangle-w { background-position: -80px -192px; }
.ui-icon-circle-triangle-n { background-position: -96px -192px; }
.ui-icon-circle-arrow-e { background-position: -112px -192px; }
.ui-icon-circle-arrow-s { background-position: -128px -192px; }
.ui-icon-circle-arrow-w { background-position: -144px -192px; }
.ui-icon-circle-arrow-n { background-position: -160px -192px; }
.ui-icon-circle-zoomin { background-position: -176px -192px; }
.ui-icon-circle-zoomout { background-position: -192px -192px; }
.ui-icon-circle-check { background-position: -208px -192px; }
.ui-icon-circlesmall-plus { background-position: 0 -208px; }
.ui-icon-circlesmall-minus { background-position: -16px -208px; }
.ui-icon-circlesmall-close { background-position: -32px -208px; }
.ui-icon-squaresmall-plus { background-position: -48px -208px; }
.ui-icon-squaresmall-minus { background-position: -64px -208px; }
.ui-icon-squaresmall-close { background-position: -80px -208px; }
.ui-icon-grip-dotted-vertical { background-position: 0 -224px; }
.ui-icon-grip-dotted-horizontal { background-position: -16px -224px; }
.ui-icon-grip-solid-vertical { background-position: -32px -224px; }
.ui-icon-grip-solid-horizontal { background-position: -48px -224px; }
.ui-icon-gripsmall-diagonal-se { background-position: -64px -224px; }
.ui-icon-grip-diagonal-se { background-position: -80px -224px; }


/* Misc visuals
----------------------------------*/

/* Corner radius */
.ui-corner-tl { -moz-border-radius-topleft: 6px; -webkit-border-top-left-radius: 6px; border-top-left-radius: 6px; }
.ui-corner-tr { -moz-border-radius-topright: 6px; -webkit-border-top-right-radius: 6px; border-top-right-radius: 6px; }
.ui-corner-bl { -moz-border-radius-bottomleft: 6px; -webkit-border-bottom-left-radius: 6px; border-bottom-left-radius: 6px; }
.ui-corner-br { -moz-border-radius-bottomright: 6px; -webkit-border-bottom-right-radius: 6px; border-bottom-right-radius: 6px; }
.ui-corner-top { -moz-border-radius-topleft: 6px; -webkit-border-top-left-radius: 6px; border-top-left-radius: 6px; -moz-border-radius-topright: 6px; -webkit-border-top-right-radius: 6px; border-top-right-radius: 6px; }
.ui-corner-bottom { -moz-border-radius-bottomleft: 6px; -webkit-border-bottom-left-radius: 6px; border-bottom-left-radius: 6px; -moz-border-radius-bottomright: 6px; -webkit-border-bottom-right-radius: 6px; border-bottom-right-radius: 6px; }
.ui-corner-right {  -moz-border-radius-topright: 6px; -webkit-border-top-right-radius: 6px; border-top-right-radius: 6px; -moz-border-radius-bottomright: 6px; -webkit-border-bottom-right-radius: 6px; border-bottom-right-radius: 6px; }
.ui-corner-left { -moz-border-radius-topleft: 6px; -webkit-border-top-left-radius: 6px; border-top-left-radius: 6px; -moz-border-radius-bottomleft: 6px; -webkit-border-bottom-left-radius: 6px; border-bottom-left-radius: 6px; }
.ui-corner-all { -moz-border-radius: 6px; -webkit-border-radius: 6px; border-radius: 6px; }

/* Overlays */
.ui-widget-overlay { background: #eeeeee url(images/ui-bg_diagonals-thick_90_eeeeee_40x40.png) 50% 50% repeat; opacity: .80;filter:Alpha(Opacity=80); }
.ui-widget-shadow { margin: -7px 0 0 -7px; padding: 7px; background: #000000 url(images/ui-bg_highlight-hard_70_000000_1x100.png) 50% top repeat-x; opacity: .30;filter:Alpha(Opacity=30); -moz-border-radius: 8px; -webkit-border-radius: 8px; border-radius: 8px; }


public class FileUploader extends HttpServlet {

    protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException 
    {
        try {

            ArrayList<Object> items =  (ArrayList<Object>) new ServletFileUpload(new DiskFileItemFactory()).parseRequest(request);
            FileItem  curntFile=null;
            for(int iCount=0;iCount<items.size();iCount++){
               curntFile=  (FileItem)items.get(iCount);

               dir = dir+curntFile.getName();                        
               OutputStream out = new FileOutputStream(new File ( dir ));            
               InputStream inputStream = curntFile.getInputStream();
               int read = 0;
               byte[] bytes = new byte[1024];
               while ((read = inputStream.read(bytes)) != -1) {
                out.write(bytes, 0, read);
                }
               inputStream.close();
               out.flush();
               out.close();
               uploadedFilesResult=curntFile.getName();
           }

        } catch (FileUploadException e) {
           throw new ServletException("Parsing file upload failed.", e);
        }
        response.getWriter().print(uploadedFilesResult);


    }
}


<servlet>
  <servlet-name>DataEntry</servlet-name>
  <servlet-class>com.tcs.Webframework.ehf.action.FileUploader</servlet-class>
</servlet>

<servlet-mapping>
  <servlet-name>DataEntry</servlet-name>
  <url-pattern>/dataentry</url-pattern>
</servlet-mapping>
like image 27
Karthik Gajula Avatar answered Oct 02 '22 05:10

Karthik Gajula

Here are a few simple tutorials on how to implement drag-and-drop using just javascript:

Drag and Drop using Javascript

Javascript Drag and Drop

The following utilize jQuery plugins, which might be a bit easier to implement if you are interested in using them :

jQuery Drag and Drop Tutorials

like image 24
Rion Williams Avatar answered Oct 02 '22 06:10

Rion Williams
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