JS Read and write JSON file instance code _javascript tips

This section describes how to read and write JSON file under JS, the code is very concise

function Funsave () {
var id = $ (' #testText1 ') [0].value;
var name = $ (' #testText2 ') [0].value;
var str = ' {mydata:[' + ' {ID: ' + ID + ', Name: ' + name + '} ' + ']} ';

str = "{mydata:[{id: '" + ID + "', Name: ' + name + '}]}";

var json = eval (' (' + str + ') ');

var fso, TF;
try{
fso = new ActiveXObject ("Scripting.FileSystemObject");
      tf = FSO. CreateTextFile ("F:\\baiduyun\\myhtml\\db_user.json", true);
      Tf. WriteLine (str);
catch (Err) {


      }finally{
      TF. Close ();
      }
}

function Funsearch () {
var fso, TS, S;
var ForReading = 1;
try{
fso = new ActiveXObject ("Scripting.FileSystemObject");
      TS = fso. OpenTextFile ("F:\\baiduyun\\myhtml\\db_user.json", ForReading);
      s = ts. ReadLine ();
      var json = eval (' (' + S + ') ');
      Alert (JSON. mydata[0].id);
} catch (Err) {


}finally{
ts. Close ();
}