javascript中如何将对象转化为json字符串？_u010523770的专栏

1：JavaScript中如何将对象转化为json字符串？

var data={};	
data.backPoint = $("#backPoint").val();
data.afterPoint = $("#afterPoint").val();
var ticketNos=[];
$("input[name='ticketNo']").each(function(i){
       var id = $(this).attr("id"); 
       var ticketNo= $(this).val();
       ticketNos[i]={"id":id,"ticketNo":ticketo};
});
data.ticketNos=ticketNos;
var purchaseInfoVo=JSON.stringify(data);var data={};