Question

我需要从数组值创建对象属性并为其指定一些值，例如

var main_obj = {};
var dynamic_array = ["value1", "value2", "value3", "value4"];

从dynamic_array我需要创建main_obj，如：

main_obj[value1][value2][value3] = some_value;

请给我一些建议。

Answer 1

dynamic_array.forEach(function(prop){
   main_obj[prop] = some_value;  
});

Answer 2

尝试解释您的问题，这可能是您正在寻找的解决方案：

function createNestedProperties(obj, array, value) {
    var result = {};
    var result_tmp = obj;
    var i = 0;
    while (i < array.length) {
        if (i < (array.length - 1))
            result_tmp[array[i]] = {};
        else
            result_tmp[array[i]] = value;
        result_tmp = result_tmp[array[i]];
        i++;
    }
    return obj;
}

以这种方式使用：

var main_obj = {"value1":{"value2":{"value3":{}}}};
var dynamic_array = ["value1", "value2", "value3"];

main_obj = createNestedProperties(main_obj, dynamic_array, {"value_Z":"new value"});

结果对象：

{"value1":{"value2":{"value3":{"value_Z":"new value"}}}}

如果已经存在，此函数将覆盖main_obj中的现有属性。

Answer 3

这是另一种方式

var dynamic_array = ["value1","value2","value3"];
var value = 'your value';

function createobj(dynamic_array,value){
    var count = dynamic_array.length;
    var text= '';
    var ended = '';
    for(var i = 0; i < count; i++){
      text += '{"'+dynamic_array[i]+'":';
      ended +='}';
    }
    text += '"'+value+'"'+ended;
    return JSON.parse(text);
}
console.log(createobj(dynamic_array,value));

Answer 4

我递归地解析对象，而不是构建jQuery - How to recursively loop over an object's nested properties?

    function recursiveIteration(main_obj) {
        for (var property in main_obj) {
            if (property == value3)
            {
                main_obj[property] = {"value4":test};
            }
            else
            {
                recursiveIteration(main_obj[property]);
            }
        }
    }
    recursiveIteration(main_obj);

如何使用数组值动态构建javascript对象

4 个答案: