javaScript解析json数据(国外英语资料).docVIP

javaScript解析json数据(国外英语资料) json (javascript object notation) 一种简单的数据格式, 比xml更轻巧. json 是 javascript 原生格式, 中处理 json 数据不需要任何特殊的 或工具包 这意味着在 javascript api. json的规则很简单: 对象是一个无序的 名称 / 值 对 集合.一个对象以 ( (左括号) 开始 } (右括号) 结束.每个 名称 后跟一个 (冒号); 名称 / 值 对 之间使用 (逗号) 分隔.具体细节参考http: / / / json-zh.html 举个简单的例子. i 代码 1. showjson () () 2. user = var 3. { 4. username: andy. 5. age: 20 6. info: { start , cellphone 98765}, 7. address: 8. [ 9. (the city, beijing, chief, 222333}, 10. new york city (chief, 555666} 11. ] 12. } 13. 14. alert (user.username). 15. alert (user.age). 16. alert (.cellphone). 17. alert (user.address.city [0]). 18. alert (user.address.postcode [0]). 19. } 这表示一个user对象, 拥有username, age, record of 等属性. 同样也可以用json来简单的修改数据, 修改上面的例子 i 代码 1. showjson () () 2. user = var 3. { 4. username: andy. 5. age: 20 6. info: { start , cellphone 98765}, 7. address: 8. [ 9. (the city, beijing, chief, 222333}, 10. new york city (chief, 555666} 11. ] 12. } 13. 14. alert (user.username). 15. alert (user.age). 16. alert (.cellphone). 17. alert (user.address.city [0]). 18. alert (user.address.postcode [0]). 19. 20. user.username = tom. 21. alert (user.username). 22. } json提供了json.js包, 下载http: / / / json.js 后, 将其引入然后就可以简单的使用 object.tojsonstring 转换成json数据 (). i 代码 1. showcar () () 2. var carr = new because (dodge, the coronet r / t, 1968), yellow). 3. alert (carr.tojsonstring ()); 4. } 5. 6. (make, model, function and development (color) 7. this.make = make. 8. this.model = model. 9. this.year = year; 10. this. Color = color; 11.} You can use Eval to convert JSON characters to Object JS code 1., function, myEval () { 2. var str{= name: Violet, occupation, character}; 3. var obj = Eval (` (+ STR + ) ); 4. alert (obj.toJSONString ()); 5.} Or use the parseJSON () method JS code 1., function, myEval () { 2. var str{= name: Violet, occupation, character}; 3. var obj = str.parseJSON (); 4. alert (obj.toJSONString ()); 5.} Next, use prototype to write a Ajax example of JSON. Just write a servle