HTML5 Drag and Drop Feature

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Code Snippet  for Drag and Drop Image
<!DOCTYPE html>
<html>
<title></title>
<!--Internal CSS To declare box out line-->
<style>
.box,.box2{
      width:300px;
      height:300px;
  border:solid 2px red;
  } 
   .box2{
                margin-top: 5px;
            }
</style>
<!--declaration ends-->
<h1></h1>
<body>
<!--delcaring box1 class-->
<div class="box" >
<!-- image to be dragged-->
<img src="https://i.picsum.photos/id/1025/200/200.jpg" id="imagedragitem"> </div>
<div class="box2" id="targetbox"></div>
<!--box2 declared to received dragged image from box1-->
</form>
<script>
document.getElementById("imagedragitem").ondragstart=function(e){
console.log(e);
console.log("calling on drop");
let data='<img src="https://i.picsum.photos/id/1025/200/200.jpg" id="imagedragitem">';
e.dataTransfer.setData("text",data);
}
 <!--ondrop event is --> dragged item (element or text selection) is dragged.t-->
document.getElementById("targetbox").ondrop=function(e){
console.log(e);
let fetchedData=e.dataTransfer.getData("text");
console.log(fetchedData);
this.innerHTML=fetchedData;
}
<!--ondragenter event is --> a dragged item enters a valid drop target-->
document.getElementById("targetbox").ondragenter=function(e){
console.log("calling on drage enter");
let fetchedData=e.dataTransfer.getData("text");
console.log(fetchedData);
e.preventDefault();
  document.querySelector(".box").innerHTML="";

 }
<!--ondragover event is --> a dragged item is being dragged over a valid drop target, every few hundred milliseconds.-->
document.getElementById("targetbox").ondragover=function(e){
                console.log("dragover");
                e.preventDefault();
             
            }
</script>
</body>
</html>

-------------------------------------------------------------------------------------------------------------------
Above code can be further improvised for reusability
--------------------------------------------------------------------------------------------------------------------


<!DOCTYPE html>
<html>
<title></title>
<!--Internal CSS To declare box out line-->
<style>
.box,.box2{
      width:300px;
      height:300px;
  border:solid 2px red;
  }   
   .box2{
                margin-top: 5px;
            }
</style>
<!--declaration ends-->  
<h1></h1>
<body>
<!--delcaring box1 class-->  
<div class="box" >
<!-- image to be dragged-->  
<img src="https://i.picsum.photos/id/1025/200/200.jpg" id="imagedragitem"> </div>
<div class="box2" id="targetbox"></div> 
<!--box2 declared to received dragged image from box1-->
</form>
<script>
document.getElementById("imagedragitem").ondragstart=ondragstartevt;
document.getElementById("targetbox").ondrop=ondropevt;
document.getElementById("targetbox").ondragenter=ondragenterevt;
document.getElementById("targetbox").ondragover=ondrageoverevet;

 function ondragstartevt(e){
console.log(e);
console.log("calling on drop");
let data='<img src="https://i.picsum.photos/id/1025/200/200.jpg" id="imagedragitem">';
e.dataTransfer.setData("text",data);
}
 <!--ondrop event is --> dragged item (element or text selection) is dragged.t-->
function ondropevt(e){
console.log(e);
let fetchedData=e.dataTransfer.getData("text");
console.log(fetchedData);
this.innerHTML=fetchedData;
}
<!--ondragenter event is --> a dragged item enters a valid drop target-->
function ondragenterevt(e){
console.log("calling on drage enter");
let fetchedData=e.dataTransfer.getData("text");
console.log(fetchedData);
e.preventDefault();
  document.querySelector(".box").innerHTML="";

 }

 <!--ondragover event is --> a dragged item is being dragged over a valid drop target, every few hundred milliseconds.-->
function ondrageoverevet(e){
                console.log("dragover");
                e.preventDefault();
                
            }

</script>
</body>
</html>
Output of above code
________________________________________________________________________________

________________________________________________________________________________

Same code can be written in other way as well

<!DOCTYPE html>
<html>
    <head>
        <title>Html5Form</title>
        <style>
            .box,.box2{
                width: 300px;
                height:300px;
                border:solid 2px red;
            }
            .box2{
                margin-top: 5px;
            }
        </style>
    </head>
    <body>
        <div class="box">
            <img src="https://i.picsum.photos/id/1025/200/200.jpg" id="dragitem" ondragstart="dragStart(event)">
        </div>
        <div class="box2" id="droptarg" ondrop="dropTarget(event)" ondragenter="dragEnter(event)" ondragover="dragOver(event)"></div>
        <script>
            function dragStart(e){
                console.log(e);
                let data='<img src="https://i.picsum.photos/id/1025/200/200.jpg" id="dragitem">';
                e.dataTransfer.setData("text",data);
            }
            function dropTarget(e){
                console.log("dropped");
                let fetchedData=e.dataTransfer.getData("text");
                console.log(fetchedData)
                document.getElementById("droptarg").innerHTML=fetchedData;
                document.querySelector('.box').innerHTML="";
            }
            function dragEnter(e){
                console.log("dragenter")
                e.preventDefault();
                document.querySelector(".box").innerHTML="";
            }
            function dragOver(e){
                console.log("dragover");
                e.preventDefault();
             
            }
        </script>
    </body>
</html>



----------------------------------------------------------------------------------------------------------------------------


<!DOCTYPE html>
<html>
    <head>
        <title>Html5Form</title>
        <style>
            .box,.box2{
                width: 300px;
                height:300px;
                border:solid 2px red;
            }
            .box2{
                margin-top: 5px;
            }
        </style>
    </head>
    <body>
        <div class="box">
            <img src="https://i.picsum.photos/id/1025/200/200.jpg" id="dragitem">
        </div>
        <div class="box2" id="droptarg"></div>
        <script>
            document.getElementById("dragitem").addEventListener("dragstart",dragStart,false);
            document.getElementById("droptarg").addEventListener("dragEnter",dragEnter,false);
            document.getElementById("droptarg").addEventListener("drop",dropTarget,false);
            document.getElementById("droptarg").addEventListener("dragover",dragOver,false);
            function dragStart(e){
                console.log(e);
                let data='<img src="https://i.picsum.photos/id/1025/200/200.jpg" id="dragitem">';
                e.dataTransfer.setData("text",data);
            }
            function dropTarget(e){
                console.log("dropped");
                let fetchedData=e.dataTransfer.getData("text");
                console.log(fetchedData)
                this.innerHTML=fetchedData;
                document.querySelector('.box').innerHTML="";
            }
            function dragEnter(e){
                console.log("dragenter")
                e.preventDefault();
                document.querySelector(".box").innerHTML="";
            }
            function dragOver(e){
                console.log("dragover");
                e.preventDefault();
             
            }
        </script>
    </body>
</html>




Read more about drag and drop events from below website

https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API





Pranay is a versatile Oracle Technical consultant. Adept in Oracle ERP development, SDLC management, design, and architecture. He has 11 years of extensive experience in Oracle Apps implementation engaged in technical development areas of Oracle Applications 11i/R12 E-Business Suite. He possesses sound knowledge in technologies like OAF, ADF, J2EE, MSCA, Oracle PaaS Cloud, Java Cloud services, ADF & XML Publisher. Currently, he is working for BirlaSoft Inc. USA. Being a Consistent solution provider in Oracle Developer Community forums earned him the title of "Technology Master”, Currently he holds 3rd position globally for providing a solution in Oracle Developer Community for the OAF Workspace. He has also authored several articles on ADF Technology, Fusion Financials, OAF & PaaS Cloud. He successfully presented the case study in Oracle Collaborate event forum on "How optimizing the Oracle Mobile App Solution Helped in Boosting the Productivity of a Warehouse."

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