对象数组到 JavaScript 中的数组数组
假设我们有一个像这样的对象数组 −
const arr = [
{"Date":"2014","Amount1":90,"Amount2":800},
{"Date":"2015","Amount1":110,"Amount2":300},
{"Date":"2016","Amount1":3000,"Amount2":500}
];我们需要编写一个 JavaScript 函数,其中包含一个这样的数组,并将此数组映射到另一个数组,该数组包含数组而不是对象。
因此,最终数组将如下所示 −
const output = [ ['2014', 90, 800], ['2015', 110, 300], ['2016', 3000, 500] ];
示例
它的代码如下 −
const arr = [
{"Date":"2014","Amount1":90,"Amount2":800},
{"Date":"2015","Amount1":110,"Amount2":300},
{"Date":"2016","Amount1":3000,"Amount2":500}
];
const arrify = (arr = []) => {
const res = [];
const { length: l } = arr;
for(let i = 0; i < l; i++){
const obj = arr[i];
const subArr = Object.values(obj);
res.push(subArr);
};
return res;
};
console.log(arrify(arr));输出
控制台中的输出如下 −
[ [ '2014', 90, 800 ], [ '2015', 110, 300 ], [ '2016', 3000, 500 ] ]
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