如何将具有相同构造的许多数组值映射到对象? [英] how to map many arrays values that have same construct to an object?
问题描述
如何将嵌套数组的值映射到具有相同构造的对象模板?我曾尝试过一些方法,但仍然无法达到目标,任何人都可以帮我一个忙吗?这是我从后端获得的原始数据!
const test_array = [{name:AnyManagedFundsRow,columnMeta:{a0:STRING,a1:STRING,a2:STRING,a3:DATE,a4 :DATE,a5:DOUBLE,a6:INT},rows:[[华夏基金管理有限公司,华夏大中华企业精选灵活配置混合(QDII) ,其他型基金,2016-01-20,,21.877086009428236,65135],[华夏基金管理有限公司,华夏大盘精选混合,混合型基金,2015-09 -01\" , 2017-05-02,10.307680340705128,2944]]}];
目标数据如下所示!
let target_data = [ {A0:{Description:华夏基金管理有限公司,类型:STRING},A1:{Description:华夏大中华企业精选灵活配置混合(QDII) ,type:STRING},A2:{Description:其他型基金,类型:STRING},A3:{描述:2016-01-20 ,类型:日期},A4:{描述:,类型:日期},A5:{描述:21.8770860094 28236,type:DOUBLE},A6:{Description:65135,type:INT}},{A0:{Description:华夏基金管理有限公司,,类型:STRING},A1:{Description:华夏大盘精选混合,类型:STRING},A2:{Description:混合型基金,类型:STRING},A3:{描述:2015-09-01,类型:日期},A4:{描述:2017 -05-02,type:DATE},A5:{Description:10.307680340705128,type:DOUBLE},A6:{Description:2944, type:INT}}];
只是部分好。如何使用索引迭代对象?
c_obj [index] = value;
const test_array = [{ name:AnyManagedFundsRow,columnMeta:{a0:STRING,a1:STRING,a2:STRING,a3:DATE,a4:DATE ,a5:DOUBLE,a6:INT},行:[[华夏基金管理有限公司,华夏大中华企业精选灵活配置混合(QDII),其他型基金,2016-01-20,,21.877086009428236,65135],[华夏基金管理有限公司,华夏大精选混合,混合型基金,2015-09-01,2017-05-02,10.307680340705128,2944]]}]; const tabs_obj = {}; const tabs = test_array.map(// tab(tab,index)=> {let p_obj = {},c_obj = {}; p_obj [tab.name] = []; //对象键长度让key_length = Object.keys(tab.columnMeta)。length; for(let tab incolumnMeta){let obj = {}; if(tab.columnMeta.hasOwnProperty(key)){obj.type = tab.columnMeta [key]; obj.Description =; c_obj [key.toUpperCase()] = obj; //a0.toUpperCase(); ===A0} console.log(`%c tabs $ {index}& c_obj [key.toUpperCase] = \ n`,color:#f0f,JSON.stringify(c_obj,null,2) ); // c_obj = {A0:}}让t_obj = {}; for(let.r of tab.rows){arr.map((value,index)=> {// c_obj [index] = value; t_obj [index] = value; for(key in c_obj){c_obj [key] .Description = value;}}); } p_obj [tab.name] .push(c_obj); console.log(%c \ n \ n完成c_obj!= \ n \ n,color:red,JSON.stringify(c_obj,null,4)); // c_obj = {A0:,A1:,A2:,A3:,A4:,A5:,A6:}返回p_obj; }); //格式JSON:JSON.stringify(c_obj,null,4)`
您可以使用指定的类型迭代和映射值。
var test_array = [{name:AnyManagedFundsRow,columnMeta:{a0:STRING,a1:STRING,a2:STRING,a3:DATE ,a4:DATE,a5:DOUBLE,a6:INT},行:[[华夏基金管理有限公司,华夏大中华企业精选灵活配置混合(QDII),其他型基金,2016-01-20,,21.877086009428236,65135],[华夏基金管理有限公司,华夏大盘精选混合,混合型基金,2015-09-01, 2017-05-02,10.307680340705128,2944]]}],target_data = test_array [0] .rows.map(a => a.reduce((r,c,i)=> Object.assign(r ,{['A'+ i]:{Descr iption:c,type:test_array [0] .columnMeta ['a'+ i]}}),{})); console.log(target_data);
< pre class =snippet-code-css lang-css prettyprint-override> .as-console-wrapper {max-height:100%!important;顶部:0; }
how to map a nested array's values to an object template, which has the same construct? I had tried some ways, but still can't get the goal, anybody can do me a favor? this is the original data, which I got from backend!
const test_array = [
{
"name": "AnyManagedFundsRow",
"columnMeta": {
"a0": "STRING",
"a1": "STRING",
"a2": "STRING",
"a3": "DATE",
"a4": "DATE",
"a5": "DOUBLE",
"a6": "INT"
},
"rows": [
[
"华夏基金管理有限公司",
"华夏大中华企业精选灵活配置混合(QDII)",
"其他型基金",
"2016-01-20",
"",
21.877086009428236,
65135
],
[
"华夏基金管理有限公司",
"华夏大盘精选混合",
"混合型基金",
"2015-09-01",
"2017-05-02",
10.307680340705128,
2944
]
]
}
];
Target data looks like the below construct!
let target_data = [
{
"A0": {
"Description": "华夏基金管理有限公司",,
"type": "STRING"
},
"A1": {
"Description": "华夏大中华企业精选灵活配置混合(QDII)",
"type": "STRING"
},
"A2": {
"Description": "其他型基金",
"type": "STRING"
},
"A3": {
"Description": "2016-01-20",
"type": "DATE"
},
"A4": {
"Description": "",
"type": "DATE"
},
"A5": {
"Description": "21.877086009428236",
"type": "DOUBLE"
},
"A6": {
"Description": "65135",
"type": "INT"
}
},
{
"A0": {
"Description": "华夏基金管理有限公司",,
"type": "STRING"
},
"A1": {
"Description": "华夏大盘精选混合",
"type": "STRING"
},
"A2": {
"Description": "混合型基金",
"type": "STRING"
},
"A3": {
"Description": "2015-09-01",
"type": "DATE"
},
"A4": {
"Description": "2017-05-02",
"type": "DATE"
},
"A5": {
"Description": "10.307680340705128",
"type": "DOUBLE"
},
"A6": {
"Description": "2944",
"type": "INT"
}
}
];
just partly OK. how can I using index iterate an object?
c_obj[index] = value;
const test_array = [
{
"name": "AnyManagedFundsRow",
"columnMeta": {
"a0": "STRING",
"a1": "STRING",
"a2": "STRING",
"a3": "DATE",
"a4": "DATE",
"a5": "DOUBLE",
"a6": "INT"
},
"rows": [
[
"华夏基金管理有限公司",
"华夏大中华企业精选灵活配置混合(QDII)",
"其他型基金",
"2016-01-20",
"",
21.877086009428236,
65135
],
[
"华夏基金管理有限公司",
"华夏大盘精选混合",
"混合型基金",
"2015-09-01",
"2017-05-02",
10.307680340705128,
2944
]
]
}
];
const tabs_obj = {};
const tabs = test_array.map(
// tab
(tab, index) => {
let p_obj = {},
c_obj = {};
p_obj[tab.name] = [];
// object keys length
let key_length = Object.keys(tab.columnMeta).length;
for (let key in tab.columnMeta) {
let obj = {};
if (tab.columnMeta.hasOwnProperty(key)) {
obj.type = tab.columnMeta[key];
obj.Description = "";
c_obj[key.toUpperCase()] = obj;
// "a0".toUpperCase(); === "A0"
}
console.log(`%c tabs${index} & c_obj[key.toUpperCase] = \n`, "color: #f0f", JSON.stringify(c_obj, null, 2));
// c_obj = {"A0": ""}
}
let t_obj = {};
for(let arr of tab.rows){
arr.map(
(value, index) => {
// c_obj[index] = value;
t_obj[index] = value;
for(key in c_obj){
c_obj[key].Description = value;
}
}
);
}
p_obj[tab.name].push(c_obj);
console.log("%c \n\n finish a c_obj! = \n\n", "color: red", JSON.stringify(c_obj, null, 4));
// c_obj = {"A0": "","A1": "","A2": "",A3: "",A4: "", A5: "", A6: ""}
return p_obj;
}
);
// format JSON : JSON.stringify(c_obj, null, 4)`
You could iterate and map the values with their assigned types.
var test_array = [{ name: "AnyManagedFundsRow", columnMeta: { a0: "STRING", a1: "STRING", a2: "STRING", a3: "DATE", a4: "DATE", a5: "DOUBLE", a6: "INT" }, rows: [["华夏基金管理有限公司", "华夏大中华企业精选灵活配置混合(QDII)", "其他型基金", "2016-01-20", "", 21.877086009428236, 65135], ["华夏基金管理有限公司", "华夏大盘精选混合", "混合型基金", "2015-09-01", "2017-05-02", 10.307680340705128, 2944]] }],
target_data = test_array[0].rows.map(a =>
a.reduce((r, c, i) =>
Object.assign(r, {
['A' + i]: { Description: c, type: test_array[0].columnMeta['a' + i] }
}), {}));
console.log(target_data);
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