如何获取json的值

import json

# JSON字符串
json_str = '{"name": "John", "age": 30, "city": "New York"}'

# 解析JSON字符串
data = json.loads(json_str)

# 获取值
name = data["name"]
age = data["age"]
city = data["city"]

print(name, age, city)

// JSON字符串
var jsonStr = '{"name": "John", "age": 30, "city": "New York"}';

// 解析JSON字符串
var data = JSON.parse(jsonStr);

// 获取值
var name = data.name;
var age = data.age;
var city = data.city;

console.log(name, age, city);