建立在C＃中的javascript中嵌套的对象像GROUPBY [英] create nested objects in javascript like groupby in C#

问题描述

IList<Customer> Customers =
            flat.GroupBy(cust => new { cust.ReferenceNumber, cust.Name, cust.Address })
                .Select(c => new Customer()
                {
                    ReferenceNumber = c.Key.ReferenceNumber,
                    Name = c.Key.Name,
                    Address = c.Key.Address,
                    Orders = c.Select(o => new Order()
                    {
                        OrderId = o.OrderId,
                        ProductName = o.ProductName,
                        Description = o.Description,
                        Amount = o.Amount
                    }).ToList()
                }).ToList()

走的是一条平坦列出并将其转换成一个嵌套对象可能在Javascript？
一个通用的解决方案，??

Is taking a flat list and converting it into a nested object possible in Javascript? A generic solution that is??

推荐答案

是的。

您可以围绕在JavaScript中传递的功能，这将服务于相同的目的的C＃代码的lambda表达式。就拿使用jQuery的每为例：

You can pass functions around in JavaScript, which would serve the same purpose as the lambda expressions in the C# code. Take the use of JQuery's "each" as an example:

$('div.several').each(function() { 
  // Do something with the current div.
});

您也可以很容易地创建嵌套对象：

You can also create nested objects quite easily:

var outer = {
    inner1: {
        val1: 'a',
        val2: 'b'
    },
    inner2: {
        val1: 'c',
        val2: 'd'
    }
};

当然，你可以做动态的，而不是一次全部：

Of course, you can do that dynamically, rather than all at once:

var outer = {};
outer.inner1 = {};
outer.inner1.val1 = 'a';
...

然后，你在找什么，你会需要使用数组：

Then, to do what you're looking for, you'll need to use arrays:

var result = [];
for (var i=0; i<x; ++i) {
  result[result.length] = GetIndividualResult(i);
}

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