Question

我有这样的JSON字符串化数据：

[{"availability_id":"109465","date":"2017-02-21","price":"430000"},{"availability_id":"109466","date":"2017-02-22","price":"430000"},{"availability_id":"109467","date":"2017-02-23","price":"430000"}]

我希望只获得该数据的价格值。我试过这种方式，但它没有用。

var stringify = JSON.stringify(values);

for(var i = 0; i < stringify.length; i++)
{
    alert(stringify[i]['price']);
}

我怎么能这样做？

Answer 1

此代码仅提取价格详情。

var obj = '[{"availability_id":"109465","date":"2017-02-21","price":"430000"},{"availability_id":"109466","date":"2017-02-22","price":"430000"},{"availability_id":"109467","date":"2017-02-23","price":"430000"}]';
var stringify = JSON.parse(obj);
for (var i = 0; i < stringify.length; i++) {
    console.log(stringify[i]['price']);
}

Answer 2

观察：

如果您要解析array of objects以获取属性value，则必须先转换为JSON object。

<强>样本

＆＃13;

var jsonStringify = '[{"availability_id":"109465","date":"2017-02-21","price":"430000"},{"availability_id":"109466","date":"2017-02-22","price":"430000"},{"availability_id":"109467","date":"2017-02-23","price":"430000"}]';

var jsonObj = JSON.parse(jsonStringify);

for(var i = 0; i < jsonObj.length; i++)
{
    alert(jsonObj[i]['price']);
}

＆＃13;

Answer 3

你会像这样

制作一个字符串化的对象

var obj='[{"availability_id":"109465","date":"2017-02-21","price":"430000"},
{"availability_id":"109466","date":"2017-02-22","price":"430000"},
{"availability_id":"109467","date":"2017-02-23","price":"430000"}]';

使用JSON.parse（对象）解析你的obj 然后应用此循环广告让我知道它得到任何错误骗这个

var parseObject = JSON.parse(object);

Answer 4

而不是在选择数据之前使用stringify，您应该直接在values数组上使用循环。

例如：

var priceArray = array();
values.forEach (data) {
    alert(data['price'];
    priceArray.push(data['price']);
}

stringify = JSON.stringify(values);
stringifiedPriceArray = JsON.stringify(priceArray);

一旦字符串化，就无法访问数组中的数据

获取JSON字符串值

4 个答案: