Question

从数组创建一个比这个更优雅的方法？

var createObject = function(){
var myArray= generateArray();
var myObject = {
    question : myArray[0],
    answerA : myArray[1],
    answerB : myArray[2],
    answerC : myArray[3],
    answerD : myArray[4]
    };
return myObject;
}

Answer 1

你的背景是什么？蟒？

 var values = generateArray();
 var obj = {};
 ["question", "answerA", "answerB", "answerC", "answerD"].forEach(function(item, idx) {
     obj[item] = values[idx];
 });

 return obj;

Answer 2

您可以定义属性映射：

var createObject = function(){
    // The map should have the attribute names set in order defined in `myArray`
    var map = ["question", "answerA", "answerB", "answerC", "answerD"]
    var myArray = generateArray();
    var myObject = {};
    for(var i in map)
        myObject[map[i]] = myArray[i];
    return myObject;
}

Answer 3

请尝试超越'A'，'B'，'C'，'D'：

  function arrayToObject ( array ) {
    return array.reduce(
      function ( object, cell, index ) {
        if (index > 0) object['answer' + String.fromCharCode(64 + index)] = cell;
        else           object['question'] = cell;
        return object;
      }, {}
    );
  }

Answer 4

如果你想拥有一个以数组作为参数的函数，并返回一个对象，我就是这样做的：

var toObject = function(arr) {
  var newObj = {};

  for(var i = 0; i < arr.length; i++) {
    newObj[i] = arr[i];
  }
  return newObj;
};

但是，请记住，Javascript数组只是具有更多可用方法的对象，例如push()，pop()和length属性。

希望这有帮助！

在JavaScript中将数组转换为对象

4 个答案: