如何使用JSON.parse reviver方法编辑某个值。 我只想编辑声明为lastname的每个键,然后返回新值。
var myObj = new Object();
myObj.firstname = "mike";
myObj.lastname = "smith";
var jsonString = JSON.stringify(myObj);
var jsonObj = JSON.parse(jsonString, dataReviver);
function dataReviver(key, value)
{
if(key == 'lastname')
{
var newLastname = "test";
return newLastname;
}
}
答案 0 :(得分:8)
检查特殊情况后,您只需要默认传回未修改的值:
var myObj = new Object();
myObj.firstname = "mike";
myObj.lastname = "smith";
var jsonString = JSON.stringify(myObj);
var jsonObj = JSON.parse(jsonString, dataReviver);
function dataReviver(key, value)
{
if(key == 'lastname')
{
var newLastname = "test";
return newLastname;
}
return value; // < here is where un-modified key/value pass though
}
JSON.stringify(jsonObj )// "{"firstname":"mike","lastname":"test"}"