怎麽用JS讀寫本地文本文件

var fso, f1, ts;

var ForReading = 1;

fso = new ActiveXObject("Scripting.FileSystemObject");

ts = fso.OpenTextFile(document.all.attachFile.value/*此處為含全部路徑的文件名*/, ForReading);

document.all.mailbdy.value=ts.ReadAll();

ts.Close();

//寫文件

var title = document.getElementById("title").value;//文件名

var fso=new ActiveXObject("Scripting.FileSystemObject");

var f=fso.CreateTextFile("C://"+title+".nc",true); //可隨意選擇後綴名

f.write(document.getElementById("babala").value);

f.Close();