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JavaScript - Drag & Drop Imagers (again)

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Drag & Drop Imagers (again)	View Content

I'm sure that you must be sick and tired of the drag & drop question and for that I apologise but I have not been able to find an answer to this particular requirement despite much reading.

The object of this task is to create a very limited editor in javascript.

I have a page with two DIVs in columns. The left DIV holds text and the right holds several images. The DIVs are populated as the page loads.

There are a couple of buttons used to apply styles to the selected text, heading or description. Looking like this :-
Code:

<div id="details">
  <p class="heading">text</p>
  <p class="desc">text</p>
  <p class="heading">text</p>
  <p class="desc">text</p>
  <p class="heading">text</p>
  <p class="desc">text</p>
</div>

Once the text has been formatted as above, I want to be able to drag the images into place in the text like this :-
Code:

<div id="details">
  <p class="heading">text</p>
  <p class="desc">text</p>
  <p class="heading"><img src="photo.jpg">text</p>
  <p class="desc">text</p>
  <p class="heading">text</p>
  <p class="desc">text</p>
</div>

The images in the left DIV have been given float right in css.

I have not been able to find a method of placing that image in position like that.

I guess it doesn't have to be drag&drop, but that would be far easer for the operator.

Can anyone point me in the right direction please but I beg, please be gentle I am a newbie at javascript.

Many thanks.

Edited to add: This only needs to work in FF.

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Hello everyone!

So, what it does: You can successfully drag something anywhere, but when you click it again, it resets to its original position (I don't know why), and when you try to drag it again, as soon as your cursor touches the object it disappears (I don't know why). I'm hoping someone can tell me why it is happening and how to fix it!

Code:

// JavaScript Document

var posX;
var posY;
var element;

function drag(event) {
	element = document.getElementById("square");
	posX = event.clientX;
	posY = event.clientY;
	element.addEventListener("mousemove", move, false);
}

function move(event) {
	
	if (typeof(document.getElementById("square").mouseup) == "undefined")
		element.addEventListener("mouseup", drop, false);
	//Prevents redundantly adding the same event handler repeatedly
	
	element.style.left = event.clientX - posX + "px";
	element.style.top = event.clientY - posY + "px";
}

function drop() {
	element.removeEventListener("mousemove", move, false);
	element.removeEventListener("mouseup", drop, false);
}

the html is a simple (position is set to relative):

<p id="square" onmousedown="drag(event)">meep</p>

Lastly, and most importantly, thank you all for your time =]

EDIT: This is the first time I've written javascript code and would like to learn the basics, which is why I am not using a library.

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Hello,

I have a system where one clicks on an image an a floating calculator appear.

<img src="images/groutculatorman.png" width="114" height="85" onclick="showdiv()"/>

<div id="demo" style="visibility:hidden"> <div id="calculator" class="drag">

-----
<script type="text/javascript">

function closeCalculator() {
document.getElementById("calculator").style.display = "none";
window.location.href = window.location.href;}

var ie = document.all;
var ns6 = document.getElementById && !document.all;
var dragapproved=false;
var z, x, y;

function move(e) {
if (dragapproved) {
z.style.left=ns6? temp1+e.clientX-x: temp1+event.clientX-x;
z.style.top=ns6? temp2+e.clientY-y : temp2+event.clientY-y;
return false;
}
}

function drags(e) {
if (!ie&&!ns6)
return;
var firedobj = ns6? e.target : event.srcElement;
var topelement = ns6? "HTML" : "BODY";
while (firedobj.tagName != topelement&&firedobj.className != "drag") {
firedobj = ns6? firedobj.parentNode : firedobj.parentElement;
}
if (firedobj.className == "drag") {
dragapproved = true;
z = firedobj;
temp1 = parseInt(z.style.left+0);
temp2 = parseInt(z.style.top+0);
x = ns6? e.clientX: event.clientX;
y = ns6? e.clientY: event.clientY;
document.onmousemove=move;
return false;
}
}
document.onmousedown=drags;
document.onmouseup=new Function("dragapproved=false");
// -->
function showdiv()
{
var mydiv = document.getElementById("demo");
mydiv.style.visibility="";
mydiv.style.display="";
}

</script>
------

PROBLEM

I added a drop down function on the image in order to open different calculators.

The system works however the calculator won't drop (doesn't deselect).

Any ideas.

New code.

<a href="javascript:;" onMouseOver="MM_showMenu(window.mm_menu_1009090908_0,11,82,null,'image1')" onMouseOut="MM_startTimeout();">

<img src="images/groutculatorman.png" name="image1" width="114" height="85" border="0" id="image1">

</a> <div id="demo" style="visibility:hidden"> <div id="calculator" class="drag">

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

<script language="JavaScript1.2">mmLoadMenus();</script>

<script type="text/javascript">

function showdiv()
{
var mydiv = document.getElementById("demo");
mydiv.style.visibility="";
mydiv.style.display="";
}

</script>

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Hey complete beginner to javascript here so sorry if I'm doing something stupid

Basically I've tried to follow this guide to make it so that I can move an image on the page.

I have a style tag in the head

Code:

<style type="text/css">.drag{position: relative;}</style>

I have an image like this:

Code:

<img src="logo.png" class="drag" alt="logo" />

which is obviously in the body

I copied and pasted the code given in the guide:

Code:

<script language="JavaScript" type="text/javascript">
<!--
var _startX = 0;			// mouse starting positions
var _startY = 0;
var _offsetX = 0;			// current element offset
var _offsetY = 0;
var _dragElement;			// needs to be passed from OnMouseDown to OnMouseMove
var _oldZIndex = 0;			// we temporarily increase the z-index during drag
var _debug = $('debug');	// makes life easier


InitDragDrop();

function InitDragDrop()
{
	document.onmousedown = OnMouseDown;
	document.onmouseup = OnMouseUp;
}

function OnMouseDown(e)
{
	// IE is retarded and doesn't pass the event object
	if (e == null) 
		e = window.event; 
	
	// IE uses srcElement, others use target
	var target = e.target != null ? e.target : e.srcElement;
	
	_debug.innerHTML = target.className == 'drag' 
		? 'draggable element clicked' 
		: 'NON-draggable element clicked';

	// for IE, left click == 1
	// for Firefox, left click == 0
	if ((e.button == 1 && window.event != null || 
		e.button == 0) && 
		target.className == 'drag')
	{
		// grab the mouse position
		_startX = e.clientX;
		_startY = e.clientY;
		
		// grab the clicked element's position
		_offsetX = ExtractNumber(target.style.left);
		_offsetY = ExtractNumber(target.style.top);
		
		// bring the clicked element to the front while it is being dragged
		_oldZIndex = target.style.zIndex;
		target.style.zIndex = 10000;
		
		// we need to access the element in OnMouseMove
		_dragElement = target;

		// tell our code to start moving the element with the mouse
		document.onmousemove = OnMouseMove;
		
		// cancel out any text selections
		document.body.focus();
		
		// prevent text selection in IE
		document.onselectstart = function () { return false; };
		// prevent IE from trying to drag an image
		target.ondragstart = function() { return false; };
		
		// prevent text selection (except IE)
		return false;
	}
}

function ExtractNumber(value)
{
	var n = parseInt(value);
	
	return n == null || isNaN(n) ? 0 : n;
}

function OnMouseMove(e)
{
	if (e == null) 
		var e = window.event; 

	// this is the actual "drag code"
	_dragElement.style.left = (_offsetX + e.clientX - _startX) + 'px';
	_dragElement.style.top = (_offsetY + e.clientY - _startY) + 'px';
	
	_debug.innerHTML = '(' + _dragElement.style.left + ', ' + _dragElement.style.top + ')';	
}

function OnMouseUp(e)
{
	if (_dragElement != null)
	{
		_dragElement.style.zIndex = _oldZIndex;

		// we're done with these events until the next OnMouseDown
		document.onmousemove = null;
		document.onselectstart = null;
		_dragElement.ondragstart = null;

		// this is how we know we're not dragging
		_dragElement = null;
		
		_debug.innerHTML = 'mouse up';
	}
}
//-->
	</script>

I have tried putting the javascript in the head and the body but no matter where I put it, I can't drag and drop the image. What am I doing wrong?

Thank you for your time

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Dear forum

Rather than use a library, I have attempted to write my own attempt at a script that allows multiple elements to be dragged around the page. It starts by loading all divs into an array, and then forms a new array of only divs with the required class name. I believe this script doesn't work for internet explorer, but I am not concerned by this.

As you will see if you run the code below, the script works well for divs containing text, but if I include an image inside a div, then the image will follow the mouse even if the button is released.

I have spent a whole day on this tiny script and really don't know where to go from here! Could anybody shed some light on this please?

Thanks

Matt

Code:

<html> 
<head> 

<style> 
 .dragger 
 { 
  background-color:lightgreen; 
  position:absolute; 
 } 
</style> 

<script type="text/javascript"> 

var all_els=[]; 
var els=[]; 
var el; 

 window.onload = function() 
 { 

all_els=document.getElementsByTagName("div"); //an array of all div elements on page 
for(var i=0;i<all_els.length;i++){ 

if(all_els[i].className=='dragger') { els.push(all_els[i]);}   //just add those with the correct class name to our final array 

 } 


  for (el in els) 
  { 
  this.dragging=false;  //each element in the array is an object, so new properties e.g. dragging can be set.  Initially set the dragging property of each element to false 

  els[el].onmousedown=function() {this.dragging=true;} 
  els[el].onmouseup=function() {this.dragging=false;} 

  } 
 } 


 document.onmousemove = function(e) 
 { 

  for(el in els) 
  { 

   if (els[el].dragging==true) 
  { 
   els[el].style.left = e.clientX - els[el].offsetWidth/2 +'px'; 
   els[el].style.top = e.clientY - els[el].offsetHeight/2+'px'; 
  } 

 } 
 } 

</script> 
<title>Simple Drag</title> 
</head> 

<body> 
<div class="dragger"> Some text to drag </div> 
<br><br><br><br><br><br> 
<div class="dragger"> Some other text to drag </div> 
<br><br><br><br><br><br> 
<div class="dragger"> <img src="http://www.mpklein.co.uk/images/phoenix.jpg"></img> </div> 
</body> 
</html>

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Hi everyone,
I am setting up a website where we want a drag n drop solution for a customer to place an email.
To give you an idea on what we want, picture this...
A form where the customer can enter there details.
Below the form are icons of items.
The customer can then drag these items into an image of a box below.
Would also be nice if it could list what is "in" the box.
Once customer is satisfied, the contents get emailed to us and we can provide further details from there.
Mainly has to look nice from the customers side, on our side we are happy to receive just the titles or codes of what they are dragging into this box.

Hopefully i have made this simple to understand, if anyone needs any more information, please do not hesitate to ask me.

Also, this will be implemented into a Joomla site once sorted out, if that makes any difference.

Thank you in advance!

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I am creating a website that runs an iFrame with website displayed in it. On that page, in the frame, there is a simple href hyperlink. I have a text element next to the iFrame that is acting as an address bar. I want to be able to drag the link from the frame to the address bar and ondrop have the iframe redirect to the dragged link url. Here is the code I have
Code:

<html>
<head>
<style>
#NetFrame {
border:2px solid #0A9;
height:650px;
width:75%;
Position: absolute;
top:2%;
left:25%;

}
#url {
width:25%;
height:650px;
}
</style>
<script type="text/javascript">
function getUrl() {
var source = document.getElementById('url').value;
loadUrl(source);
}
function loadUrl(source) {
var showUrl = document.getElementById('NetFrame');

NetFrame.src = source;

document.getElementById('url').value="";
}
</script>
</head>
<body>
<form>
<input type="text" id="url" onDragEnd="getUrl()"/>

</form>
<iframe src="link1.html" id="NetFrame"> </iframe>
</body>
</html>

The iFrame is called NetFrame and the Text element is url. I have not coded in 6 years and am stuck here. Please Help, and be specific you are explaining to an absolute novice.

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I'm currently developing a drag on drag editor at work.

I have a list of fields on the right which I drag onto a form and it adds the input object onto the form. I also have editable divs which I using to add text as a kind of very scaled down RTE.

Rather than dragging a field the form, I could use the field as display only so I would like to embed this into the editable div as part the text.

I'm thinking I could do something like facebook does where if I type a "@" then I could create a auto suggest to embed a field value into text but what i would like to do is drag the field into the text.

So my question is this, is it possible to know the positon in the text of where I performed the drop, I suppose that would be where the mouseup occurs?

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Hi,
I have the following code for drag and drop objects in any page.

My target:
I want to be able to drag and drop the advertisement images that come on top of the page. It works most of the time, but sometime page crashes. I use google chrome as a bookmarklet.

Code:
Code:

javascript:var d=document,b=d.body,i="innerHTML",s="style",p="position",a="absolute",r="relative",w1="offsetWidth",w2="width",h1="offsetHeight",h2="height",t1="offsetTop",t2="top",l1="offsetLeft",l2="left",drag=false;function down(e){drag=true;z=event.srcElement;z[s][p]=r;x=event.clientX;y=event.clientY;zx=z[l1];zy=z[t1];d.onmousemove=move}function up(e){drag=false;}function move(e){if(drag){z[s][l2]=zx+event.clientX-x;z[s][t2]=zy+event.clientY-y}}document.onmousedown=down;document.onmouseup=up;

Any improvements in the code is appreciated.
Does anybody have a advanced better code, because I am just medium in javascript.

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I'm trying to create a calendar application that users can upload pictures and then put them on a calendar. I'd like to display all of the images and then drag them from one pane to the calendar. I'd like it to be something similar to the following link:

http://www.vistaprint.com/studio/cal...id=button&rd=2

Does anyone have any scripts that can do the drag and drop or could you possibly give me an idea on where to start with something like this? I really appreciate the help in advance!

Thanks!

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Hi everyone

I am having a bit of trouble with a question that I have been given for my Javascript assignment.

I was given a web page with a series of boxes (created by <div> tags) which could be dragged and dropped anywhere on the web page, and they were dragged by holding the mouse down and dragging, and released when the mouse button was released. The web page can be viewed at http://adamr.hitwebs.net/dragDropOriginal.html and the source can be viewed at http://adamr.hitwebs.net/dragDropOriginal.js.

The assignment was to make any other element drag-and-droppable, so I chose to make a jigsaw puzzle and hence make images drag-and-droppable, but with minimal changes to the script (simply changing the class name and id of my images), the dragging and dropping process is visually very different (the images appear to "stick" to the cursor on mouse up, and you have to actually click a second time to drop the image).

Can someone please help me to fix this so that the drag and drop looks like what the boxes did (an example of what I want is exactly how the smiley faces are dragged-and-dropped at http://elouai.com/javascript-drag-and-drop.php).

My jigsaw puzzle can be viewed at http://adamr.hitwebs.net/drag&Drop.html and the source can be downloaded from http://adamr.hitwebs.net/dragDrop.js.

As you will see, apart from the large sections of script that I added, I only changed about two or three words of the original script, and it stopped working properly as soon as I started using images, which was long before I made my own additions to the script.

Also note that there are A LOT of comments in my code because this is an assignment, and I have to note every change that I made to the original code, as well as put explanatory comments in my own code.

P.S. Please don't tell me to use the script on the smiley face web page that I have provided, as this would not be useful to me. I must amend the script that I was originally given with the boxes. As for the assignment, I have checked this with the teacher, and I will not lose any marks for the terrible drag-and-drop effect as it does not appear to be my fault. This post is purely for my curiosity and because I hate not being able to solve a problem, and to me, this is a problem.

Thanks heaps,
- Adam

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Hi,
I am currently working in mail client project. The mails are displayed in the html table. I have an requirement to drag and drop the mails from the Inbox to another folder. Can you please suggest how to proceed with this. Thanks in advance.

Regards,
Anne.

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Hi. I'm trying to get drag and drop script working from this tutorial:
http://www.webreference.com/programm...mn2/index.html

I want to drag items between columns (DIV's).

Here is my code:
Code:

document.onmousemove = mouseMove;
document.onmouseup   = mouseUp;
document.onmousedown = mouseDown; 

window.onload = function(){
	// Create our helper object that will show the item while dragging
	dragHelper = document.createElement('DIV');
	dragHelper.style.cssText = 'position:absolute;display:none;';

	CreateDragContainer(
		document.getElementById('DragContainer1'),
		document.getElementById('DragContainer2'),
		document.getElementById('DragContainer3')
	);

	document.body.appendChild(dragHelper);
}


var mouseOffset = null;
var iMouseDown  = false;
var lMouseState = false;
var dragObject  = null;

// Demo 0 variables
var DragDrops   = [];
var curTarget   = null;
var lastTarget  = null;
var dragHelper  = null;
var tempDiv     = null;
var rootParent  = null;
var rootSibling = null;


function mouseCoords(ev){
	if(ev.pageX || ev.pageY){
		return {x:ev.pageX, y:ev.pageY};
	}
	return {
		x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,
		y:ev.clientY + document.body.scrollTop  - document.body.clientTop
	};
}



document.onmouseup = mouseUp;
var dragObject     = null;

function makeClickable(object){
	object.onmousedown = function(){
		dragObject = this;
	}
}

var dropTargets = [];

function addDropTarget(dropTarget){
	dropTargets.push(dropTarget);
}

function mouseUp(ev){
	ev           = ev || window.event;
	var mousePos = mouseCoords(ev);

	for(var i=0; i<dropTargets.length; i++){
		var curTarget  = dropTargets[i];
		var targPos    = getPosition(curTarget);
		var targWidth  = parseInt(curTarget.offsetWidth);
		var targHeight = parseInt(curTarget.offsetHeight);

		if(
			(mousePos.x > targPos.x)                &&
			(mousePos.x < (targPos.x + targWidth))  &&
			(mousePos.y > targPos.y)                &&
			(mousePos.y < (targPos.y + targHeight))){
				// dragObject was dropped onto curTarget!
		}
	}

	dragObject   = null;
}



var dragObject  = null;
var mouseOffset = null;

function getMouseOffset(target, ev){
	ev = ev || window.event;

	var docPos    = getPosition(target);
	var mousePos  = mouseCoords(ev);
	return {x:mousePos.x - docPos.x, y:mousePos.y - docPos.y};
}

function getPosition(e){
	var left = 0;
	var top  = 0;

	while (e.offsetParent){
		left += e.offsetLeft;
		top  += e.offsetTop;
		e     = e.offsetParent;
	}

	left += e.offsetLeft;
	top  += e.offsetTop;

	return {x:left, y:top};
}


function mouseMove(ev){
	ev         = ev || window.event;

	/*
	We are setting target to whatever item the mouse is currently on

	Firefox uses event.target here, MSIE uses event.srcElement
	*/
	var target   = ev.target || ev.srcElement;
	var mousePos = mouseCoords(ev);

	// mouseOut event - fires if the item the mouse is on has changed
	if(lastTarget && (target!==lastTarget)){
		// reset the classname for the target element
		var origClass = lastTarget.getAttribute('origClass');
		if(origClass) lastTarget.className = origClass;
	}

	/*
	dragObj is the grouping our item is in (set from the createDragContainer function).
	if the item is not in a grouping we ignore it since it can't be dragged with this
	script.
	*/
	var dragObj = target.getAttribute('DragObj');

	 // if the mouse was moved over an element that is draggable
	if(dragObj!=null){

		// mouseOver event - Change the item's class if necessary
		if(target!=lastTarget){
			var oClass = target.getAttribute('overClass');
			if(oClass){
				target.setAttribute('origClass', target.className);
				target.className = oClass;
			}
		}

		// if the user is just starting to drag the element
		if(iMouseDown && !lMouseState){
			// mouseDown target
			curTarget     = target;

			// Record the mouse x and y offset for the element
			rootParent    = curTarget.parentNode;
			rootSibling   = curTarget.nextSibling;

			mouseOffset   = getMouseOffset(target, ev);

			// We remove anything that is in our dragHelper DIV so we can put a new item in it.
			for(var i=0; i<dragHelper.childNodes.length; i++) dragHelper.removeChild(dragHelper.childNodes[i]);

			// Make a copy of the current item and put it in our drag helper.
			dragHelper.appendChild(curTarget.cloneNode(true));
			dragHelper.style.display = 'block';

			// set the class on our helper DIV if necessary
			var dragClass = curTarget.getAttribute('dragClass');
			if(dragClass){
				dragHelper.firstChild.className = dragClass;
			}

			// disable dragging from our helper DIV (it's already being dragged)
			dragHelper.firstChild.removeAttribute('DragObj');

			/*
			Record the current position of all drag/drop targets related
			to the element.  We do this here so that we do not have to do
			it on the general mouse move event which fires when the mouse
			moves even 1 pixel.  If we don't do this here the script
			would run much slower.
			*/
			var dragConts = DragDrops[dragObj];

			/*
			first record the width/height of our drag item.  Then hide it since
			it is going to (potentially) be moved out of its parent.
			*/
			curTarget.setAttribute('startWidth',  parseInt(curTarget.offsetWidth));
			curTarget.setAttribute('startHeight', parseInt(curTarget.offsetHeight));
			curTarget.style.display  = 'none';

			// loop through each possible drop container
			for(var i=0; i<dragConts.length; i++){
				with(dragConts[i]){
					var pos = getPosition(dragConts[i]);

					/*
					save the width, height and position of each container.

					Even though we are saving the width and height of each
					container back to the container this is much faster because
					we are saving the number and do not have to run through
					any calculations again.  Also, offsetHeight and offsetWidth
					are both fairly slow.  You would never normally notice any
					performance hit from these two functions but our code is
					going to be running hundreds of times each second so every
					little bit helps!

					Note that the biggest performance gain here, by far, comes
					from not having to run through the getPosition function
					hundreds of times.
					*/
					setAttribute('startWidth',  parseInt(offsetWidth));
					setAttribute('startHeight', parseInt(offsetHeight));
					setAttribute('startLeft',   pos.x);
					setAttribute('startTop',    pos.y);
				}

				// loop through each child element of each container
				for(var j=0; j<dragConts[i].childNodes.length; j++){
					with(dragConts[i].childNodes[j]){
						if((nodeName=='#text') || (dragConts[i].childNodes[j]==curTarget)) continue;

						var pos = getPosition(dragConts[i].childNodes[j]);

						// save the width, height and position of each element
						setAttribute('startWidth',  parseInt(offsetWidth));
						setAttribute('startHeight', parseInt(offsetHeight));
						setAttribute('startLeft',   pos.x);
						setAttribute('startTop',    pos.y);
					}
				}
			}
		}
	}

	// If we get in here we are dragging something
	if(curTarget){
		// move our helper div to wherever the mouse is (adjusted by mouseOffset)
		dragHelper.style.top  = mousePos.y - mouseOffset.y;
		dragHelper.style.left = mousePos.x - mouseOffset.x;

		var dragConts  = DragDrops[curTarget.getAttribute('DragObj')];
		var activeCont = null;

		var xPos = mousePos.x - mouseOffset.x + (parseInt(curTarget.getAttribute('startWidth')) /2);
		var yPos = mousePos.y - mouseOffset.y + (parseInt(curTarget.getAttribute('startHeight'))/2);

		// check each drop container to see if our target object is "inside" the container
		for(var i=0; i<dragConts.length; i++){
			with(dragConts[i]){
				if(((getAttribute('startLeft'))                               < xPos) &&
					((getAttribute('startTop'))                                < yPos) &&
					((getAttribute('startLeft') + getAttribute('startWidth'))  > xPos) &&
					((getAttribute('startTop')  + getAttribute('startHeight')) > yPos)){

						/*
						our target is inside of our container so save the container into
						the activeCont variable and then exit the loop since we no longer
						need to check the rest of the containers
						*/
						activeCont = dragConts[i];

						// exit the for loop
						break;
				}
			}
		}

		// Our target object is in one of our containers.  Check to see where our div belongs
		if(activeCont){
			// beforeNode will hold the first node AFTER where our div belongs
			var beforeNode = null;

			// loop through each child node (skipping text nodes).
			for(var i=activeCont.childNodes.length-1; i>=0; i--){
				with(activeCont.childNodes[i]){
					if(nodeName=='#text') continue;

					// if the current item is "After" the item being dragged
					if(
						curTarget != activeCont.childNodes[i]                              &&
						((getAttribute('startLeft') + getAttribute('startWidth'))  > xPos) &&
						((getAttribute('startTop')  + getAttribute('startHeight')) > yPos)){
							beforeNode = activeCont.childNodes[i];
					}
				}
			}

			// the item being dragged belongs before another item
			if(beforeNode){
				if(beforeNode!=curTarget.nextSibling){
					activeCont.insertBefore(curTarget, beforeNode);
				}

			// the item being dragged belongs at the end of the current container
			} else {
				if((curTarget.nextSibling) || (curTarget.parentNode!=activeCont)){
					activeCont.appendChild(curTarget);
				}
			}

			// make our drag item visible
			if(curTarget.style.display!=''){
				curTarget.style.display  = '';
			}
		} else {

			// our drag item is not in a container, so hide it.
			if(curTarget.style.display!='none'){
				curTarget.style.display  = 'none';
			}
		}
	}

	// track the current mouse state so we can compare against it next time
	lMouseState = iMouseDown;

	// mouseMove target
	lastTarget  = target;

	// track the current mouse state so we can compare against it next time
	lMouseState = iMouseDown;

	// this helps prevent items on the page from being highlighted while dragging
	return false;
}


function mouseUp(ev){
	if(curTarget){
		// hide our helper object - it is no longer needed
		dragHelper.style.display = 'none';

		// if the drag item is invisible put it back where it was before moving it
		if(curTarget.style.display == 'none'){
			if(rootSibling){
				rootParent.insertBefore(curTarget, rootSibling);
			} else {
				rootParent.appendChild(curTarget);
			}
		}

		// make sure the drag item is visible
		curTarget.style.display = '';
	}
	curTarget  = null;
	iMouseDown = false;
}

function mouseDown(){
	iMouseDown = true;
	if(lastTarget){
		return false;
	}
}

function makeDraggable(item){
	if(!item) return;
	item.onmousedown = function(ev){
		dragObject  = this;
		mouseOffset = getMouseOffset(this, ev);
		return false;
	}
}



Number.prototype.NaN0=function(){return isNaN(this)?0:this;}

function CreateDragContainer(){
	/*
	Create a new "Container Instance" so that items from one "Set" can not
	be dragged into items from another "Set"
	*/
	var cDrag        = DragDrops.length;
	DragDrops[cDrag] = [];

	/*
	Each item passed to this function should be a "container".  Store each
	of these items in our current container
	*/
	for(var i=0; i<arguments.length; i++){
		var cObj = arguments[i];
		DragDrops[cDrag].push(cObj);
		cObj.setAttribute('DropObj', cDrag);

		/*
		Every top level item in these containers should be draggable.  Do this
		by setting the DragObj attribute on each item and then later checking
		this attribute in the mouseMove function
		*/
		for(var j=0; j<cObj.childNodes.length; j++){

			// Firefox puts in lots of #text nodes...skip these
			if(cObj.childNodes[j].nodeName=='#text') continue;

			cObj.childNodes[j].setAttribute('DragObj', cDrag);
		}
	}
}

This script is working only particularly as You can see he
http://lukasz.webh.pl/test.html

Can anyone tell me please what is wrong with this script?

Drag & Drop Problem

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Hi

I need a help with my code.

When i'm trying to put a picture in empty div it works fine, but when i put the second picture to the div where already is picture, then second picture "disappear".
If i have only one div, then everything is ok, but with 2 or more divs i have issue.

PHP Code:
<div id="drop" ondrop="drop(event)" ondragover="allowDrop(event)"></div>
<div id="drop2" ondrop="drop(event)" ondragover="allowDrop(event)"></div>
<img id="drag1" src="http://images.photo.bikestats.eu/zdjecie,600,79346,20091201,zdjecia-wiewiorek.jpg" draggable="true" ondragstart="drag(event)" width="80" height="80">
<img id="drag2" src="http://www.tech-blog.pl/wordpress/wp-content/uploads/2011/12/gaba-16-12-2011.jpg" draggable="true" ondragstart="drag(event)" width="80" height="80">
<style>
#drop {
    border: 1px solid black;
    width:80px;
    height:80px;
}
#drop2 {
    border: 1px solid black;
    width:80px;
    height:80px;
}
</style>
<script>
function allowDrop(ev) {
    ev.preventDefault();
}

function drag(ev) {
    ev.dataTransfer.setData("text/html", ev.target.id);
}

function drop(ev) {
    ev.preventDefault();
    var data = ev.dataTransfer.getData("text/html");

    var parent = ev.target.parentNode;
    if( parent.id == 'drop' ) {
        parent.removeChild(ev.target);
        parent.appendChild(document.getElementById(data));
    }
    else
        ev.target.appendChild(document.getElementById(data));
}
</script>

Drag/ Drop Homepage

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Hi Folks,

I've been trying to create a drag drop homepage like www.bbc.co.uk, google etc.

I can get the basic drag and drop to work, but I can't get the layout to save anywhere. Can anyone please help?

Here is what I have so far.

http://www.sandwell.nhs.uk/test/test.html

It uses Glow, which doesn't have any cookie functions apparantly.

Could anyone please help me save my layout, any example code would be much appreciated

Manu thanks

Multiple Drag And Drop

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http://www.javascriptkit.com/howto/drag.shtml

Has anyone modified this script to drag multiple items?

My Attempt At Drag And Drop...

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Dear forum

Rather than use a library, I have attempted to write my own attempt at a script that allows multiple elements to be dragged around the page. It starts by loading all divs into an array, and then forms a new array of only divs with the required class name. I believe this script doesn't work for internet explorer, but I am not concerned by this.

As you will see if you run the code below, the script works well for divs containing text, but if I include an image inside a div, then the image will follow the mouse even if the button is released.

I have spent a whole day on this tiny script and really don't know where to go from here! Could anybody shed some light on this please?

Thanks

Matt

Code:

<html>
<head>

<style>
 .dragger
 {
  background-color:lightgreen;
  position:absolute;
 }
</style>

<script type="text/javascript">

var all_els=[];
var els=[];
var el;

 window.onload = function()
 {

all_els=document.getElementsByTagName("div"); //an array of all div elements on page
for(var i=0;i<all_els.length;i++){

if(all_els[i].className=='dragger') { els.push(all_els[i]);}   //just add those with the correct class name to our final array

 }


  for (el in els)
  {
  this.dragging=false;  //each element in the array is an object, so new properties e.g. dragging can be set.  Initially set the dragging property of each element to false

  els[el].onmousedown=function() {this.dragging=true;}
  els[el].onmouseup=function() {this.dragging=false;}

  }
 }


 document.onmousemove = function(e)
 {

  for(el in els)
  {

   if (els[el].dragging==true)
  {
   els[el].style.left = e.clientX - els[el].offsetWidth/2 +'px';
   els[el].style.top = e.clientY - els[el].offsetHeight/2+'px';
  }

 }
 }

</script>
<title>Simple Drag</title>
</head>

<body>
<div class="dragger"> Some text to drag </div>
<br><br><br><br><br><br>
<div class="dragger"> Some other text to drag </div>
<br><br><br><br><br><br>
<div class="dragger"> <img src="http://www.mpklein.co.uk/images/phoenix.jpg"></img> </div>
</body>
</html>

Drag / Drop Html

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Hello CodingForums! I need some help with drag & drop links / downloads.
I would like an example like the following website;
http://panic.com/