1.cmd切换到“C:\Windows\System32>”下，执行“regsvr32 Scrrun.dll”
2.JavaScript读写txt文本代码如下，注意要发布到服务器上
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>读写txt文件</title>
</head>
<body>
<script>
function writeFile(filename,filecontent)
{
var fso, f, s ;
fso = new ActiveXObject("Scripting.FileSystemObject");
f = fso.OpenTextFile(filename,8,true);
f.WriteLine(filecontent);
f.Close();
alert('写入txt数据成功！');
}
//读文件
function readFile(filename){
var fso = new ActiveXObject("Scripting.FileSystemObject");
var f = fso.OpenTextFile(filename,1);
var s = "";
while (!f.AtEndOfStream)
s += f.ReadLine()+"/n";
f.Close();
return s;
}
</script>
<input type="text" id="txtwrite" value="helloworld">
<input type="button" value="Write!" onclick="writeFile('c://a.txt',document.getElementById('txtwrite').value)"/>
<input type="button" value="Read!" onclick="document.getElementById('show').value=readFile('c:/a.txt')"/>
<br>
<textarea id="show" name="show" cols="30" rows="4" ></textarea>
</body>
</html>