求JS获取上传文件绝对路径，兼容IE和FF

qmz2007 2012-05-11 09:09:59

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暖枫无敌 2012-07-07

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<html>

<head>

    <title>JS获取上传文件的绝对路径，兼容IE和FF</title>

    <script type="text/javascript">

function readFile(fileBrowser) {

    if (navigator.userAgent.indexOf("MSIE")!=-1)

        readFileIE(fileBrowser);

    else if (navigator.userAgent.indexOf("Firefox")!=-1 || navigator.userAgent.indexOf("Mozilla")!=-1)

        readFileFirefox(fileBrowser);

    else

        alert("Not IE or Firefox (userAgent=" + navigator.userAgent + ")");

}



function readFileFirefox(fileBrowser) {

    try {

        netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");

    }  

    catch (e) {

        alert('路径错误!');

        return;

    }



    var fileName=fileBrowser.value;

    var file = Components.classes["@mozilla.org/file/local;1"]

        .createInstance(Components.interfaces.nsILocalFile);

    try {

        file.initWithPath( fileName.replace(/\//g, "\\\\") );

    }

    catch(e) {

        if (e.result!=Components.results.NS_ERROR_FILE_UNRECOGNIZED_PATH) throw e;

        return;

    }



    if ( file.exists() == false ) {

        alert("File '" + fileName + "' not found.");

        return;

    }

    alert(file.path);

}



function readFileIE(fileBrowser) {

    alert(document.getElementById("fileBrowser").value);

}

    </script>



</head>

<body>

    <form name="form1">



    <input type="file" name="fileBrowser" size="50" onchange="readFile(this)" />

    </form>

</body>

</html>