从jQuery的JSON对象或提取数据JS

我想使用https://raw.github.com/currencybot/open-exchange-rates/master/latest.json 从jQuery的JSON对象或提取数据JS

提供作为一个初步的测试货币数据，我已经创造了这个简化版本作为嵌入对象：

var obj = [ 
{ 
    "disclaimer": "This data is collected from various providers and provided free of charge for informational purposes only, with no guarantee whatsoever of accuracy, validity, availability, or fitness for any purpose; use at your own risk. Other than that, have fun! More info: http://openexchangerates.org/terms/", 
    "license": "Data collected from various providers with public-facing APIs; copyright may apply; not for resale; no warranties given. Full license info: http://openexchangerates.org/license/", 
    "timestamp": 1339036116, 
    "base": "USD", 
    "rates": { 
     "EUR": 0.795767, 
     "GBP": 0.645895, 
     "JPY": 79.324997, 
     "USD": 1 
    } 
}];

我想要做的就是以某种方式查询/ grep /过滤json对象，例如“EUR”作为条件，并让它返回一个名为'rate'的值为'0.795767'的变量结果是。

我已经看过了JQuery的grep和过滤器函数，但我无法弄清楚如何隔离对象的'rates'部分，然后得到我想要的速度。

来源

2012-06-07 Joseph

var obj = [ 
{ 
    "disclaimer": "This data is collected from various providers and provided free of charge for informational purposes only, with no guarantee whatsoever of accuracy, validity, availability, or fitness for any purpose; use at your own risk. Other than that, have fun! More info: http://openexchangerates.org/terms/", 
    "license": "Data collected from various providers with public-facing APIs; copyright may apply; not for resale; no warranties given. Full license info: http://openexchangerates.org/license/", 
    "timestamp": 1339036116, 
    "base": "USD", 
    "rates": { 
     "EUR": 0.795767, 
     "GBP": 0.645895, 
     "JPY": 79.324997, 
     "USD": 1 
    } 
}]; 

obj[0].rates.EUR; // output: 0.795767

或

obj[0].rates['EUR']; output: //0.795767

DEMO

如果要隔离率另一个变量和使用该变量，然后尝试像以下：现在

var rates = obj[0].rates;

，

rates.EUR; 
rates.GBP;

等等。

来源

2012-06-07 06:51:52 thecodeparadox

非常好，那正是我想要的。我不知道它会如此简单。 – Joseph

我的JSON数据是“{”0“：{”level1“：”完成“，”level2“：”完成“，”level3“：”否“}}'如何将这个提取到每个变量中？我尝试使用'$ .each'方法，但返回未定义'var level1 = ele [0] .level1;' – 151291

您还可以使用Javascript的JSON.parse()函数将JSON字符串转换为Javascript JSON对象。

var JSONObject = JSON.parse("{'value1' : 1, 'value2' : 2}"); 
console.log(JSONObject.value1); // Prints '1'..

来源

2012-06-07 07:02:00 Ammar

它给了我“未定义”。请帮助 –

从jQuery的JSON对象或提取数据JS

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