js读写json文件实例代码

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（）;}}