排序依据日期值，这是刚刚在角JS字符串 [英] OrderBy Date values, which are just strings in Angular JS

问题描述

我想按日期的订单一些数据，虽然日期仅仅是字符串，格式为DD-MM-YYYY。

I'm trying to order some data by date, although the dates are just strings, in the format dd-mm-yyyy.

我做了一个过滤器，转换成数字的普通字符串（其中美国的日期格式，在这里我想英国的日期格式），如01272012至27-01-2014，但是当我尝试将它们仍只订购看到他们作为数字串，因此1990年1月1日会来2014年2月1日之前。

I made a filter which converted the plain string of numbers (which where in the US date format, where I wanted the UK date format) e.g 01272012 to 27-01-2014, but when I try to order them it still only sees them as numeric strings, so 01-01-1990 would come before 02-01-2014.

如何做到这一点的过滤器有什么建议？

Any suggestions of how to do this in a filter?

谢谢！

更新

我想通了日期将自动获得orderedif日期格式是YYYY-MM-DD。然后我用用排序依据：['日期'] 来对数据进行排序，显示数据时，只能用我原来的过滤器

I figured out the dates would automatically get orderedif the date format was yyyy-mm-dd. I then used used orderBy:['date'] to order the data, only using my original filter when displaying the data.

我最后不得不推翻我的数据，显示最近的日期。要做到这一点我添加了一个 - 我的排序依据说明书：排序依据：[' - 日期']

I ended up having to reverse my data, showing the most recent dates. To achieve this I added a - to my orderBy statment: orderBy:['-date'].

推荐答案

由于排序依据过滤器，你可以使用它。
您的NG-repear可能会类似于此：

Because orderBy filter, you can use that. Your ng-repear would probably look similar to this:

ng-repeat="item in items | orderBy: orderByDate"

然后您的控制器上，你会定义 orderByDate 功能：

$scope.orderByDate = function(item) {
    var parts = item.dateString.split('-');
    var date = new Date(parseInt(parts[2], 
                        parseInt(parts[1]), 
                        parseInt(parts[0]));

    return date;
};

实现的功能是由你。我选择创建日期从字符串。您从 orderByDate 然后用函数返回的对象是为了用＆LT，=，>运算符。

Implementation of the function is up to you. I choose to create Date from the string. The object you return from orderByDate function is then used to be order with using <, =, > operators.

编辑：作为解决方案：反转

由于：反转不能与作为参数传递的函数中使用，可以实现您的自定义函数返回逆转值本身。在使用日期这种情况是不可能的，我会构建一个号码，然后，用减号返回它：

Since :reverse can't be used with a function passed as parameter, you can implement your custom function to return reversed value itself. In such case using Date is not possible, I would construct a number then and returned it with minus:

$scope.orderByDate = function(item) {
    var parts = item.dateString.split('-');
    var number = parseInt(parts[2] + parts[1] + parts[0]);

    return -number;
};

这篇关于排序依据日期值，这是刚刚在角JS字符串的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！