1，json字符串转化为JavaScript对象:
方法：JSON.parse(string)
eg:var account = '{"name":"jaytan","mebers":["cind","yobi"],\
"number":234,"location":"WUHAN"}';
var accountobj = JSON.parse(account);
console.log(account.name);
console.log(account.mebers);
输出结果：
2,JavaScript对象转化为JSON
方法：JSON.stringify(object)
eg:var accountObj = {
name:"jaytan",
number：3456,
members:["jim,bob"],
location:"wuhan"
};
var accountstr = JSON.stringify(accountobj);
console.log(accountstr);
输出结果：
