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您可以通过拖放框触发某种类型的事件吗?

[英]Can you trigger some type of event with drag and drop boxes?

I'm trying to develop a small site where user can drag and drop pictures. 我正在尝试开发一个小型站点,用户可以在其中拖放图片。 So when user drags a particular picture to the box it would return some kind of a result in the form of text like details about that picture... 因此,当用户将特定图片拖到框中时,它将以文本形式返回某种结果,例如有关该图片的详细信息...

This is the current code that I'm using to accomplish drag and drop, but I can't figure out how to add functionality that I described above: 这是我用来完成拖放操作的当前代码,但是我不知道如何添加上面描述的功能:

<!DOCTYPE HTML>
<html>
<head>
    <meta charset ="utf-8">
    <style type="text/css">
        #dragBox {width:336px;height:221px;padding:10px;border:1px solid #aaaaaa;}
    </style>
    <script>
    function allowDrop(ev)
    {
        ev.preventDefault();
    }

    function drag(ev)
    {
        ev.dataTransfer.setData("Text",ev.target.id);
    }

    function drop(ev)
    {
        ev.preventDefault();
        var data=ev.dataTransfer.getData("Text");
        ev.target.appendChild(document.getElementById(data));
    }
    </script>
</head>
<body bgcolor="#333333">
<div div align="center">
    <img id="drag1" src="foodOne.jpg" draggable="true" ondragstart="drag(event)" width="336" height="221">
    <div id="dragBox" ondrop="drop(event)" ondragover="allowDrop(event)"></div>
</div>
</body>
</html>

A drop event can have a files property. 放置事件可以具有files属性。 You can read the files with JavaScript. 您可以使用JavaScript读取文件。 The common approach is to send it to the server which can then send the information back, like a path to a thumbnail. 常见的方法是将其发送到服务器,然后服务器可以将信息发送回来,例如缩略图的路径。

There are a lot of scripts readily available already, just Google/Bing. 已经有很多脚本可供使用,仅Google / Bing。

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