Question

在下面的代码中plz告诉我如何在textarea中加载textarea路径为parent.frame_name1.iframe_name1.form_name1.textarea_name1

的文本

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
    "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Language" content="en-us">
    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
    <title>Local File I/O</title>
    <script type="text/javascript">
    <!-- // Begin
    var ForReading = 1,
        ForWriting = 2,
        ForAppending = 8;
    var objFSO = new ActiveXObject("Scripting.FileSystemObject");

    function checkText(fld, btn) {
        btn.disabled = false;
        fld.onkeypress = null;
        return true;
    }

    function checkFile(obj, div, btn, btn2, fld) {
        div.innerHTML = '<p><b>File:</b><br><b>Size:</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<b>Last Modified:</b></p>';
        btn.disabled = true;
        btn2.disabled = true;
        fld.value = '';
        fld.onkeypress = new Function("return checkText(" + "document." + fld.form.name + "." + fld.name + "," + "document." + btn2.form.name + "." + btn2.name + ")");
        //
        // if (obj.value.indexOf(":") != 1) {
        // alert("Local file name must include a drive letter.");
        // return false;
        // }
        var ary = obj.value.split("\\");
        if (ary.length < 2) {
            alert("Local file name must include a path.");
            return false;
        }
        if (!/(\.txt)$/i.test(obj.value)) {
            alert("Local file name must include the '.txt' extension.");
            return false;
        }
        //
        try {
            objFile = objFSO.GetFile(obj.value);
        } catch (e) {
            if (e.message != "File not found") {
                alert(e.message);
                return false;
            } else {
                try {
                    if (confirm(obj.value + "\n" + "does not exist. Click 'Ok' to create it.")) {
                        objFile = objFSO.CreateTextFile(obj.value);
                        objFile.Close();
                        objFile = objFSO.GetFile(obj.value);
                    } else {
                        return false;
                    }
                } catch (e) {
                    alert(e.message);
                    return false;
                }
            }
        }
        fileSpecs(div, btn);
        objFile = null;
        return true;
    }

    function fileSpecs(div, btn) {
        if (objFile.Size > 0) {
            btn.disabled = false;
        } else {
            btn.disabled = true;
        }
        var str = '<p>';
        str += '<b>File:</b> ' + objFile.Path + '<br>';
        str += '<b>Size:</b> ';
        if (objFile.Size < 1024) {
            str += objFile.Size + ' bytes';
        } else {
            str += (objFile.Size / 1024).toFixed(1) + ' Kbytes';
        }
        str += '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;';
        str += '<b>Last Modified:</b> ' + objFile.DateLastModified;
        str += '</p>';
        div.innerHTML = str;
    }

    function loadFile(btn, obj, div, fld) {
        objFile = objFSO.GetFile(obj.value);
        objStream = objFile.OpenAsTextStream(ForReading);
        fld.value = objStream.ReadAll();
        objStream.Close();
        objStream = null;
        fileSpecs(div, btn);
        objFile = null;
        return true;
    }

    function saveFile(btn, obj, div, fld, btn2) {
        btn.disabled = true;
        objFile = objFSO.GetFile(obj.value);
        objStream = objFile.OpenAsTextStream(ForWriting);
        objStream.Write(fld.value);
        objStream.Close();
        objStream = null;
        objFile = objFSO.GetFile(obj.value);
        fileSpecs(div, btn2);
        objFile = null;
        fld.value = '';
        fld.onkeypress = new Function("return checkText(" + "document." + fld.form.name + "." + fld.name + "," + "document." + btn.form.name + "." + btn.name + ")");
        return true;
    }
    // End -->
    </script>
    </head>

    <body>
    <center>
    <form name="myForm" onsubmit="return false;">
    <table width="720">
    <tr>
    <td colspan="4">
    <div id="fileSpec">
    <p><b>File:</b><br><b>Size:</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<b>Last Modified:</b></p>
    </div>
    </td>
    </tr>
    <tr>
    <td colspan="3" width="580" align="center" valign="top">
    <textarea rows="25" name="fileArea" cols="70"
    onkeypress="return checkText(this, btnSave);"></textarea> </td>
    <td rowspan="2" width="140" valign="top"><p>This is a simple demonstration of
    a browser-based local text file editor.&nbsp; Begin by clicking the <b>Browse</b>
    button to select an existing text file from your local hard drive.&nbsp;
    (In the Browse dialog, you may type in a new file name if
    desired.)&nbsp; The selected file information is then displayed at the
    top of the page.&nbsp; For an existing file, click the <b>Load</b>
    button next.&nbsp; After editing, click the <b>Save</b> button to
    complete the demonstration.</p></td>
    </tr>
    <tr>
    <td align="left">
    <input type="file" name="fileName" size="50"
    onchange="return checkFile(this, document.getElementById('fileSpec'), btnLoad, btnSave, fileArea);"> </td>
    <td align="center">
    <input type="button" name="btnLoad" value="Load" disabled
    onclick="return loadFile(this, fileName, document.getElementById('fileSpec'), fileArea);"> </td>
    <td align="center">
    <input type="button" name="btnSave" value="Save" disabled
    onclick="return saveFile(this, fileName, document.getElementById('fileSpec'), fileArea, btnLoad);"> </td>
    </tr>
    </table>
    </form>
    </center>

    </body>
    </html>

Answer 1

您是否意味着要加载的文件名包含在parent.frame_name1.iframe_name1.form_name1.textarea_name1中？在这种情况下，您应该动态更改<input type="file"/>值，这是浏览器不支持的（这将是一个安全问题）。

如何在textarea在iframe中的另一个textarea中加载文本

1 个答案: