[英]Iterating over JSON put results into an Array
I have a JSON Object from a REST API like this: 我有一个来自REST API的JSON对象,如下所示:
{
success: true,
message: "",
result: [{
Currency: "GBP",
IsActive: true,
BaseAddress: "1N52wHoVR79PMDishab2XmRHsbekCdGquK",
Notice: null
},
{
Currency: "USD",
IsActive: true,
BaseAddress: "LhyLNfBkoKshT7R8Pce6vkB9T2cP2o84hx",
Notice: null
},
{
Currency: "YEN",
IsActive: true,
BaseAddress: "D9GqmkGCpgtnXP7xMD78v9xfqeDkqBZBMT",
Notice: null
}
]
};
I just want a list of the Currency values so am iterating over it like this: 我只想要一个货币值列表,所以我这样迭代它:
var data = body.result;
for (var i in data) {
var id = data[i].Currency;
console.log(id)
}
Console prints ok: 控制台打印好了:
GDP
USD
YEN
But I want to put these strings into a new Array and can't figure out how to do it. 但是我想把这些字符串放到一个新的数组中,并且无法弄清楚如何去做。 Any ideas?
有任何想法吗?
Simply use the Array#Map
function: 只需使用
Array#Map
功能:
const data = { success: true, message: "", result: [{ Currency: "GBP", IsActive: true, BaseAddress: "1N52wHoVR79PMDishab2XmRHsbekCdGquK", Notice: null }, { Currency: "USD", IsActive: true, BaseAddress: "LhyLNfBkoKshT7R8Pce6vkB9T2cP2o84hx", Notice: null }, { Currency: "YEN", IsActive: true, BaseAddress: "D9GqmkGCpgtnXP7xMD78v9xfqeDkqBZBMT", Notice: null }, { Currency: "YEN", IsActive: true, BaseAddress: "D9GqmkGCpgtnXP7xMD78v9xfqeDkqBZBMT", Notice: null } ] } const currencies = [...new Set(data.result.map(a => a.Currency))]; console.log(currencies);
var body = { success: true, message: "", result: [{ Currency: "GBP", IsActive: true, BaseAddress: "1N52wHoVR79PMDishab2XmRHsbekCdGquK", Notice: null }, { Currency: "USD", IsActive: true, BaseAddress: "LhyLNfBkoKshT7R8Pce6vkB9T2cP2o84hx", Notice: null }, { Currency: "YEN", IsActive: true, BaseAddress: "D9GqmkGCpgtnXP7xMD78v9xfqeDkqBZBMT", Notice: null } ] }; var res = body.result.map(item => { return item.Currency }); console.log(res);
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