drag and drop the widgets_问答_开发者_运维开发者技术经验分享

开发者 https://www.devze.com 2023-01-16 22:58 出处：网络

I want to make something like iGoogle in WordPress, in which I can drag and drop the widgets. How could that be done wit开发者_运维百科h HTML 5?Take a look at the following link:

相关专题：wordpress

I want to make something like iGoogle in WordPress, in which I can drag and drop the widgets. How could that be done wit开发者_运维百科h HTML 5?

Take a look at the following link:

http://ljouanneau.com/lab/html5/demodragdrop.html

Here is the page code for the example:

<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="content-type"/>
<title>HTML5 Drag and drop demonstration</title>
<style type="text/css">
#boxA, #boxB, #boxC { 
  float:left; width:200px; height:200px; padding:10px; margin:10px;
}

#boxA { background-color: blue; }
#boxB { background-color: green; }
#boxC { background-color: yellow; }

#drag, #drag2, #drag3 {
  width:50px; height:50px; padding:5px; margin:5px;
  -moz-user-select:none;
}
#drag { background-color: red;}
#drag2 { background-color: orange;}
#drag3 { background-color: purple; border:3px brown solid;}

</style>
<script type="text/javascript">
function dragStart(ev) {
    ev.dataTransfer.effectAllowed='move';
    //ev.dataTransfer.dropEffect='move';
    ev.dataTransfer.setData("Text", ev.target.getAttribute('id'));
    ev.dataTransfer.setDragImage(ev.target,0,0);
    return true;
}

function dragEnter(ev) {
    var idelt = ev.dataTransfer.getData("Text");
    return true;
}

function dragOver(ev) {
    var idelt = ev.dataTransfer.getData("Text");
    var id = ev.target.getAttribute('id');
    if( (id =='boxB' || id =='boxA') && (idelt == 'drag' || idelt=='drag2'))
        return false;
    else if( id =='boxC' && idelt == 'drag3')
        return false;
    else
        return true;
}

function dragEnd(ev) {
    ev.dataTransfer.clearData("Text");
    return true
}

function dragDrop(ev) {
    var idelt = ev.dataTransfer.getData("Text");
    ev.target.appendChild(document.getElementById(idelt));
    ev.stopPropagation();
    return false; // return false so the event will not be propagated to the browser
}

</script>
</head>
<body>
    <h1>Drag and drop demo in a HTML document, using the HTML5 drag and drop API</h1>
    <div> The red box and the orange box can be dragged and dropped between 
    the blue and the green boxes.
    The purple box can be dragged and dropped only to the yellow box.
    </div>

    <div id="boxA"
        ondragenter="return dragEnter(event)"
        ondrop="return dragDrop(event)"
        ondragover="return dragOver(event)">

      <div id="drag" draggable="true"
            ondragstart="return dragStart(event)"
            ondragend="return dragEnd(event)">drag me</div>

      <div id="drag2" draggable="true"
            ondragstart="return dragStart(event)"
            ondragend="return dragEnd(event)">drag me</div>

      <div id="drag3" draggable="true"
            ondragstart="return dragStart(event)"
            ondragend="return dragEnd(event)">drag me</div>

    </div>

    <div id="boxB"
        ondragenter="return dragEnter(event)"
        ondrop="return dragDrop(event)"
        ondragover="return dragOver(event)">
    </div>

    <div id="boxC"
        ondragenter="return dragEnter(event)"
        ondrop="return dragDrop(event)"
        ondragover="return dragOver(event)">
    </div>
    <div style="clear:both">Example created by <a href="http://ljouanneau.com/blog/">Laurent Jouanneau</a>.</div>
</body>
</html>