Question

让我们假设这是为了参数而动态传递的。但简而言之就是举例说明..

let myVar = "something"

let anything = [{abc: 123, def: 456},{abc: 123, def: 456}]
let nothing = [{abc: 123, def: 456},{abc: 123, def: 456}]
let something = [{abc: 123, def: 456},{abc: 123, def: 456}]
let everything = [{abc: 123, def: 456},{abc: 123, def: 456}]

现在我假设我可以通过方括号访问它，但它似乎并不适合我。实施例

[myVar].map(function(k,v){...})

上述行的希望是使用通过用户选择动态生成的字符串。将到达其他定义的数组，或转换为等效的

something.map(function(k,v){...})

Answer 1

它不会那样工作，要使用括号获取数组，您需要为该数组提供父对象，例如：

let myVar = "something"

let myObj = {
  anything: [{abc: 123, def: 456},{abc: 123, def: 456}],
  nothing: [{abc: 123, def: 456},{abc: 123, def: 456}],
  something: [{abc: 123, def: 456},{abc: 123, def: 456}],
  everything: [{abc: 123, def: 456},{abc: 123, def: 456}]
}

myObj[myVar].map(function(k,v){...})

通过字符串动态选择数组，然后通过它.map（）

1 个答案: