javascript - 如何提取一个数组，其中该数组的键将作为 javascript 中的变量？

Question

我有一个类似数据的数组/对象，我想将数组/对象的每个键作为变量访问，如下所示：

var data = {};
data['one'] = 1;
data['tow'] = 2;

我想访问如下：
console.log(one);

并期望作为输出：1
我正在寻找一种从 PHP 中提取（数组）函数的替代方法

标签： javascriptnode.jsecmascript-6extract

Answer 1

您需要对象或地图：

const data = {}
data['one'] = 1
data['two'] = 2

console.log(data['one'])

const data2 = new Map()
data2.set('one', 1)
data2.set('two', 2)

console.log(data2.get('one'))

extract此外，近似于解构：

const data = {}
data['one'] = 1
data['two'] = 2

const { one, two } = data

console.log('Destructured from an object: ', one, two)

const data2 = new Map()
data2.set('one', 1)
data2.set('two', 2)

const [[, one2], [, two2]] = data2
const [one3, two3] = data2.values()

console.log('Destructured from map entries: ', one2, two2)
console.log('Destructured from map values: ', one3, two3)