本节为大家介绍下js如何读写json文件，代码很简练
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();}}