javascript - 将数组元素作为属性名称注入(inject)时，JavaScript字典语法错误

This question already has answers here:

How to use a variable for a key in a JavaScript object literal?

(16个答案)



Creating object with dynamic keys [duplicate]

(2个答案)


2年前关闭。




我正在运行此代码，但给出的结果很奇怪？

let surveyTypes = [1,2];

let surveyDuration = {
  surveyTypes[0]:  'first',surveyTypes[1]:  'second'
}

预期输出:

surveyDuration={1:'first',2:'second'}

实际输出:

最佳答案

因为要创建wrap键，所以必须将数组的项目dynamic放在方括号中。

let surveyTypes = [1,2];

let surveyDuration = {
  [surveyTypes[0]]:  'first',[surveyTypes[1]]:  'second'
}

console.log(surveyDuration);