js 动态生成JSON

var param = {};  //创建一个json对象
var data = [];  //创建一个数组

var param = {};
param.name = 'david';
param. = '20';

//或者
var param = {name: 'peter', : '23'};

var data = [];
data.push(param1);
data.push(param2);

//此时data的json字符串为 [{name:'david',:'20'},{name:'peter',age'23'}]

var data = {records: []};
data.records.push(row1);
data.records.push(row2);
//此时data的json字符串为 {records:[{name:'david',age:'20'},{name:'peter',age'23'}]}