将数组值转换为对象键

Question

我做一个get，它返回一个像这样的json对象：

        "data": [
[
"2016 Pass/Fail Rates by Test Centre",
"",
"",
"",
"",
"",
"",
"",
"",
""
],
[
"",
"Passes",
"",
"No ID",
"",
"Fails",
"",
"Fail Dangerous",
"",
"Total"
],
[
"Sometown",
"8,725",
"53.40%",
"140",
"0.90%",
"7,417",
"45.40%",
"48",
"0.30%",
"16,330"
],
[
"Some Other Town",
"12,778",
"44.80%",
"193",
"0.70%",
"15,422",
"54.10%",
"103",
"0.40%",
"28,496"
],
[... many more identically formatted arrays ...]

我想最终得到：

[{"Location":"Sometown", "Passes":8,725, "Pass%":53.40%, "No ID":140, "NoID%":0.90%, "Fails":7,417, "Fail%":45.40%, "Fail Dangerous":48, "FailDangerous%":0.30%, "Total":16,330}, {"Location":"Some Other Town", "Passes":8,725, etc etc...

所以我想忽略“data”数组中的第一个数组，使用第二个数组的值作为键（并用更有用的东西替换空字符串），并将所有剩余数组中的值作为结果对象中的值。

所以这是多部分问题，尽管我怀疑这是一个相当简单的问题。 最简单的方法是什么 - 如果不同，在处理/页面加载方面最简单的方法是什么？

提前致谢，

Answer 1

您可以在将索引和值添加到对象中的同时迭代数组...

你可以找到你如何能迭代对象和数组的例子在这里和示例在这里

通常，将项添加到对象

var array = [{"Location":"Sometown"}, {"Location2":"Sometown2"},    {"Location3":"Sometown3"}],
object = {};
array.forEach(function(element, index) {
    object[index] = element;
});
console.log(object);

Answer 2

这是我的解决方案，希望它对你和任何有同样困惑这个问题的人都有用！

1. 你应该构建一个有意义的对象！

 const meaningful_objs = { "Location": "", "Passes": "", "Passes%": "", "No ID": "", "No ID%": "", "Fails": "", "Fails%": "", "Fail Dangerous": "", "Fail Dangerous%": "", "Total": "" }; // or get it from you data[1], // but I think it has some errors of you got returned data! // It should be have all keys! // just make a assume, you get the right data[1]! const data[1] = ["Location", "Passes", "Passes%", "No ID", "No ID%", "Fails", "Fails%", "Fail Dangerous", "Fail Dangerous%", "Total"]; let keys = data[1]; 

 /* Array to Object */ // ["Location", "Passes", "Passes%", "No ID", "No ID%", "Fails", "Fails%", "Fail Dangerous", "Fail Dangerous%", "Total"] const keys_array = [ "Location", "Passes", "Passes%", "No ID", "No ID%", "Fails", "Fails%", "Fail Dangerous", "Fail Dangerous%", "Total" ]; let temp_obj = {}; keys_array.map( (value, index) => { temp_obj[`${value}`] = ""; // temp_obj[value] = ""; return temp_obj; } ); console.log(`temp_obj = `, temp_obj); // {"Location": "","Passes": "","Passes%": "","No ID": "","No ID%": "", "Fails": "","Fails%": "","Fail Dangerous": "","Fail Dangerous%": "","Total": ""}; for(let k in temp_obj) { console.log(`typeof (k) = `, typeof (k)); // typeof (k) = string } /* Object to Array */ const meaningful_objs = { "Location": "", "Passes": "", "Passes%": "", "No ID": "", "No ID%": "", "Fails": "", "Fails%": "", "Fail Dangerous": "", "Fail Dangerous%": "", "Total": "" }; // {"Location": "","Passes": "","Passes%": "","No ID": "","No ID%": "", "Fails": "","Fails%": "","Fail Dangerous": "","Fail Dangerous%": "","Total": ""}; let keys_array = Object.keys(meaningful_objs); console.log(`keys_array = \\n`, keys_array); // ["Location", "Passes", "Passes%", "No ID", "No ID%", "Fails", "Fails%", "Fail Dangerous", "Fail Dangerous%", "Total"] /* result */ let keys = keys_array; // ["Location", "Passes", "Passes%", "No ID", "No ID%", "Fails", "Fails%", "Fail Dangerous", "Fail Dangerous%", "Total"] let arrays = [ [ "Sometown", "8,25", "53.40%", "140", "0.90%", "7,17", "45.40%", "48", "0.30%", "16,30" ], [ "Some Other Town", "12,78", "44.80%", "193", "0.70%", "15,22", "54.10%", "103", "0.40%", "28,96" ] ]; let result = arrays.map( (array) => { let temp = {}; keys.forEach( (key, index) => { console.log(`key = `, key); console.log(`index = `, index); temp[`${key}`] = array[index]; } ); console.log(`temp = `, temp); return temp; } ); console.log(`result = `, result); /* test */ let string_objs = JSON.stringify(result); // "[{"Location":"Sometown","Passes":"8,25","Passes%":"53.40%","No ID":"140","No ID%":"0.90%","Fails":"7,17","Fails%":"45.40%","Fail Dangerous":"48","Fail Dangerous%":"0.30%","Total":"16,30"},{"Location":"Some Other Town","Passes":"12,78","Passes%":"44.80%","No ID":"193","No ID%":"0.70%","Fails":"15,22","Fails%":"54.10%","Fail Dangerous":"103","Fail Dangerous%":"0.40%","Total":"28,96"}]" let string_obj1 = JSON.stringify(result[0]); // "{"Location":"Sometown","Passes":"8,25","Passes%":"53.40%","No ID":"140","No ID%":"0.90%","Fails":"7,17","Fails%":"45.40%","Fail Dangerous":"48","Fail Dangerous%":"0.30%","Total":"16,30"}" /* { "Location":"Sometown", "Passes":"8,25", "Passes%":"53.40%", "No ID":"140", "No ID%":"0.90%", "Fails":"7,17", "Fails%":"45.40%", "Fail Dangerous":"48", "Fail Dangerous%":"0.30%", "Total":"16,30" } */ let string_obj2 = JSON.stringify(result[1]); // "{"Location":"Some Other Town","Passes":"12,78","Passes%":"44.80%","No ID":"193","No ID%":"0.70%","Fails":"15,22","Fails%":"54.10%","Fail Dangerous":"103","Fail Dangerous%":"0.40%","Total":"28,96"}" /* { "Location":"Some Other Town", "Passes":"12,78", "Passes%":"44.80%", "No ID":"193", "No ID%":"0.70%", "Fails":"15,22", "Fails%":"54.10%", "Fail Dangerous":"103", "Fail Dangerous%":"0.40%", "Total":"28,96" } */ 

Answer 3

您可以将第二个数组作为所需对象的键，并仅在键之后迭代该部分。 然后迭代键并为数组的值构建一个新对象。 返回对象以便为新数组进行映射。

 var data = { data: [["2016 Pass/Fail Rates by Test Centre", "", "", "", "", "", "", "", "", ""], ["Location", "Passes", "Passes%", "No ID", "No ID%", "Fails", "Fails%", "Fail Dangerous", "Fail Dangerous%", "Total"], ["Sometown", "8,725", "53.40%", "140", "0.90%", "7,417", "45.40%", "48", "0.30%", "16,330"], ["Some Other Town", "12,778", "44.80%", "193", "0.70%", "15,422", "54.10%", "103", "0.40%", "28,496"]] }, keys = data.data[1], result = data.data.slice(2).map(function (a) { var temp = {}; keys.forEach(function (k, i) { temp[k] = a[i]; }) return temp; }); console.log(result); 

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