Javascript找到json值 [英] Javascript find json value

问题描述

我需要在json国家/地区列表中搜索。 json就像：

I need to search inside a json list of countries. The json is like:

[ 
{"name": "Afghanistan", "code": "AF"}, 
{"name": "Åland Islands", "code": "AX"}, 
{"name": "Albania", "code": "AL"}, 
{"name": "Algeria", "code": "DZ"}
]

<我只从数据库中获取代码并输出整个名称。因此，如果我得到AL，我想从json阿尔巴尼亚中检索

I get from database only the code and would output the entire name. So if I get "AL" I would like to retrieve from json "Albania"

推荐答案

var obj = [
  {"name": "Afghanistan", "code": "AF"}, 
  {"name": "Åland Islands", "code": "AX"}, 
  {"name": "Albania", "code": "AL"}, 
  {"name": "Algeria", "code": "DZ"}
];

// the code you're looking for
var needle = 'AL';

// iterate over each element in the array
for (var i = 0; i < obj.length; i++){
  // look for the entry with a matching `code` value
  if (obj[i].code == needle){
     // we found it
    // obj[i].name is the matched result
  }
}

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