在Chrome中拖放图像

时间:2011-05-15 13:23:06

标签: javascript image google-chrome iframe drag-and-drop

我正在尝试编写一个脚本,用于在Chrome中的iframe中拖放图像。

<html>
<head>
    <script language="JavaScript">

        function InsertImage(ev)
        {
            alert("drag function called");
            var _image = document.createElement("image");
            var _sel = _win.getSelection();
            if(!_sel.isCollapsed)
            {
                _sel.deleteFromDocument();
            }
            try{
                var _range = _sel.getRangeAt(0);
            }
            catch(e)
            {
                _range = _doc.createRange();
                alert("000000:::: "+e);
                alert("_range is ::"+_range);
            }
            if(!_range)
            {
                _range = _doc.createRange();
            }
            alert("range is ::::"+_range);
            try
            {
                _range.insertNode(_image);
            }
            catch(e)
            {
                alert("1111::  "+e);
            } 
            _range.insertNode(_image);


        }

        function init()
        {
            _iframe =   document.createElement("iframe");
            _iframe.id = "view";
            _iframe.style.height = "250px";
            _iframe.style.width = "600px";
            _iframe.style.top =   "20px";
            _iframe.style.left = "200px";
            _iframe.style.position = "absolute";
            _iframe.style.border = "2px solid lightBlue";
            document.body.appendChild(_iframe);
                _iframe.contentDocument.designMode="on";//No I18N
                _win = _iframe.contentWindow;
                _win.focus();
                _doc = _win.document; //making it global variable

                _doc.body.innerHTML = "<p>aaaa bbbb cccc dddd eeee ffff gggg hhhh iiii jjjj kkkk llll mmmm nnnn oooo pppp qqqq rrrr ssss tttt uuuu vvvv wwww xxxx yyyy zzzz</p>";
                _doc.addEventListener("dragover",InsertImage,false);

        }

    </script>
</head>
<body onLoad="init()">
    <div style="position:absolute;top:300px;left:100px ">
        <p> this si a testing doc.here, we test the things</p>
    </div>
</body>

是不行...... 在chrome控制台中,我收到以下错误消息:

  

未捕获错误:WRONG_DOCUMENT_ERR:DOM异常4

选择和范围有问题,我想。

1 个答案:

答案 0 :(得分:1)

当DOM操作方法尝试使用两个不同的DOMDocuments 一起使用的节点时,会抛出DOMException.WRONG_DOCUMENT_ERR异常。您必须使用DOMDocument.importNode方法才能 DOMNode从一个文档导入到另一个文档。

我想你必须将图像节点导入到iFrame文档

类似(未经测试):

var nodeToImport = _doc.importNode(_image, true);
//nodeToImport can now be added to the second document
 _doc.appendChild(nodeToImport);

more here