本节为大家介绍下js如何读写json文件，代码很简练

? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 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(); } }