javascript文件夹选择框的两种解决方案
2015-08-12 11:54
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javascript文件夹选择框的两种解决方案
解决方案1:调用windows 的shell,但会有安全问题.
* browseFolder.js
* 该文件定义了BrowseFolder()函数,它将提供一个文件夹选择对话框
* 以供用户实现对系统文件夹选择的功能
* 文件夹选择对话框起始目录由
* Shell.BrowseForFolder(WINDOW_HANDLE, Message, OPTIONS, strPath)函数
* 的strPath参数设置
* 例如:0x11--我的电脑
* 0 --桌面
* "c:\\"--系统C盘
*
* 用如下代码把该函数应用到一个HTML文件中:
* <script src="browseFolder.js"></script>
* 或把下面代码直接COPY到<script language="javascript">...</script>标签中;
* 特别注意的是,由于安全方面的问题,你还需要如下设置才能使本JS代码正确运行,
* 否者会出现"没有权限"的问题.
*
* 1、设置可信任站点(例如本地的可以为:http://localhost)
* 2、其次:可信任站点安全级别自定义设置中:设置下面的选项
* "对没有标记为安全的ActiveX控件进行初始化和脚本运行"----"启用"
<script type="text/javascript"> /**//* *初始化,将系统所有的驱动器放入table_drives列表 */ window.onload = new function init() { var fso, s, n, e, x; fso = new ActiveXObject("Scripting.FileSystemObject"); e = new Enumerator(fso.Drives); s = ""; for (; !e.atEnd(); e.moveNext()) { x = e.item(); s = s + x.DriveLetter; s += ":"; if (x.DriveType == 3) n = x.ShareName; else if (x.IsReady) n = x.VolumeName; else n = "[驱动器未就绪]"; s += n + ","; } var drives = s.split(","); var tableDrives = document.getElementById("tables_drives"); for ( var i = 0; i < drives.length-1; i++ ) { var option = document.createElement("OPTION"); drives[i].split(":"); option.value = "["+drives[i].split(":")[0]+":]"+drives[i].split(":")[1]; option.text = "["+drives[i].split(":")[0]+":]"+drives[i].split(":")[1]; tableDrives.add(option); } } /**//* *tables_drives列表中选中的驱动器上所有文件夹放入table_folder列表中 */ function get_drives() { var tableDrives = document.getElementById("tables_drives"); var tableFolders = document.getElementById("table_folder"); for ( var i = 0; i < tableDrives.options.length; i++ ) { if ( tableDrives.options[i].selected == true ) { var fso, f, fc, s; var drive = tableDrives.options[i].value.split(":")[0].substring(1,tableDrives.options[i].value.split(":")[0].length); document.getElementById("backDir").value = drive + ":\\"; fso = new ActiveXObject("Scripting.FileSystemObject"); if (fso.DriveExists(drive)) { d = fso.GetDrive(drive); if ( d.IsReady ) { f = fso.GetFolder(d.RootFolder); fc = new Enumerator(f.SubFolders); s = ""; for (;!fc.atEnd(); fc.moveNext()) { s += fc.item(); s += ","; } var len = tableFolders.options.length; while(len >= 0) { tableFolders.options.remove(len); len--; } var option = document.createElement("OPTION"); option.value = drive + ":\\"; option.text = drive + ":\\"; tableFolders.add(option); var folders = s.split(","); for ( j = 0; j < folders.length -1; j++) { option = document.createElement("OPTION"); option.value = folders[j]; option.text = folders[j]; tableFolders.add(option); } } else { alert("无法改变当前内容!") } } else return false; } } } /**//* *table_folder双击选项中的一个选项,就将该文件夹下面的文件夹显示在table_folder列表中。 */ function get_file() { var tableFolders = document.getElementById("table_folder"); var tableDrives = document.getElementById("tables_drives"); for ( var i = 0; i < tableFolders.options.length; i++ ) { if ( tableFolders.options[i].selected == true ) { var fso, f, fc, s; var folderpath = tableFolders.options[i].value.substring(0,tableFolders.options[i].value.length); if ( folderpath.charAt(folderpath.length-1) == "\\" ) { document.getElementById("backDir").value = folderpath; } else { document.getElementById("backDir").value = folderpath + "\\"; } fso = new ActiveXObject("Scripting.FileSystemObject"); f = fso.GetFolder(folderpath); fc = new Enumerator(f.SubFolders); s = ""; for (;!fc.atEnd(); fc.moveNext()) { s += fc.item(); s += ","; } var len = tableFolders.options.length; while(len >= 0) { tableFolders.options.remove(len); len--; } var opt = ""; var opt1 = ""; for ( j = 0; j < folderpath.split("\\").length; j++ ) { var option = document.createElement("OPTION"); opt = opt + folderpath.split("\\")[j]+"\\"; if ( j > 0) { opt1 = opt; option.value = opt1.substring(0,opt1.length-1); option.text = opt1.substring(0,opt1.length-1); tableFolders.add(option); } else { option.value = opt; option.text = opt; tableFolders.add(option); } } if ( tableFolders.options[0].value == tableFolders.options[1].value ) { tableFolders.options.remove(1); } if ( s != "" ) { var folders = s.split(","); for ( j = 0; j < folders.length -1; j++) { option = document.createElement("OPTION"); option.value = folders[j]; option.text = folders[j]; tableFolders.add(option); } } } } } </script>
js
效果图:
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