How Do I Sort My Json Data Based On Date Column

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JavaScript

LoadLeadCourseRecentActivityList: function () {
       var leadCourseId = $("#hdnLeadCourseId").val();
       var args = {
           leadCourseId: leadCourseId
       }
       $.ajax({
           url: "/Lead/LoadLeadCourseActivityList",
           dataType: "json",
           type: 'GET',
           data: args,
           cache: false,
           async: false,
           success: function (data) {
               var leadCourseActivities = '<table id="tblLeadCourseRecentActivities" class="table table-striped table-bordered table-hover table-responsive"><thead><tr class="primary"><th>Activity Type</th><th>Subject</th><th>Description</th><th>Due On</th></tr></thead><tbody>';
               var countRA = 1;
               debugger;
               data = data.sort((function (a, b) {
               if (true)return (a[data.DueDate] > b[data.DueDate]) ? -1 : ((a[data.DueDate] < b[data.DueDate]) ? 0 : 1);
               //else return (b[data.DueDate] > a[data.DueDate]) ? -1 : ((b[data.DueDate] < a[data.DueDate]) ? 1 : -1);
               }));

               //data = sortByKey(data, 'data.DueDate');
               //data = sortfun(data, 'data.DueDate');

               $.each(data, function (i, CourseActivity) {
                   if (CourseActivity.ActivityTypeCode == null)
                       CourseActivity.ActivityTypeCode = "";
                   if (CourseActivity.Subject == null)
                       CourseActivity.Subject = "";
                   if (CourseActivity.Description == null)
                       CourseActivity.Description = "";
                   if (CourseActivity.DueDate == null)
                       CourseActivity.DueDate = "";

                   if (countRA <= 5) {
                       leadCourseActivities += "<tr><td>" + CourseActivity.ActivityTypeCode + "</td><td>" + CourseActivity.Subject + "</td><td>" + StringConcate(CourseActivity.Description) + "</td><td>"
                           + $.format.date(CourseActivity.DueDate, "dd-MMM-yyyy hh:mm a") + "</td></tr>";
                   }
                   countRA++;
               });
               leadCourseActivities += "</tbody></table>";
               $('#dvRecentActivity').html(leadCourseActivities);
           },
           error: function () {
               alert('Error while loading lead course activities');
           }
       });
   }

Posted 28-Jan-16 18:55pm

Member 12244967

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Comments

dan!sh 29-Jan-16 1:33am

Your service can return the data sorted. Can't it?

Sinisa Hajnal 29-Jan-16 7:20am

You cannot sort JSON, it is just text. What you *can* do is sort items returned, either in data source before writing to JSON or before showing them in the control.

Nathan Minier 29-Jan-16 12:00pm

I haven't used it in a bit, but I'm pretty sure that jQuery .ajax() parses the JSON automatically when you set it as the dataType.

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Nathan Minier · Accepted Answer · 2016-01-29T01:32:00

I have a little cheater method that I use for sorting by property in JavaScript. I'm feeling magnanimous, so you can have it today, in all its scary-long glory.

JavaScript

propSort = function(array,prop, desc) {
    array.sort(function(a, b) {
        if (a[prop] < b[prop])
            return desc ? 1 : -1;
        if (a[prop] > b[prop])
            return desc ? -1 : 1;
        return 0;
    });
}

This is the basic JavaScript array sort custom filter pattern. It uses basic JS comparison to make determinations, which is always shocks me in terms of accuracy, coming from a strongly-typed language world.

JavaScript

...
success: function (data) {
    var leadCourseActivities = '<table id="tblLeadCourseRecentActivities" class="table table-striped table-bordered table-hover table-responsive"><thead><table><tbody><tr class="primary"><th>Activity Type</th><th>Subject</th><th>Description</th><th>Due On</th></tr></tbody></table></thead><tbody>';
    var countRA = 1;
    debugger;
    propSort(data,'DueDate',true);
...
</tbody></table>

The array.sort function works on the array itself, it doesn't spin off a copy. It's basically like working with a reference in a C-derivative language.

How Do I Sort My Json Data Based On Date Column

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