Use SPServices UpdateListItems to set date in SharePoint 2013

Question

I cannot find a working solution to set a SharePoint 2013 list date using SPServices. I have done this multiple times for other column types, but I can't figure out the right format for dates. Here's what I'm doing:

var testdate = "2016-01-01 00:00:00";
$().SPServices({
    operation: "UpdateListItems",
    async: false,
    listName: "Requests",
    ID: 4,
    valuepairs: [["Due Date", testdate]],
    completefunc: function (xData, Status) {
    }
});

I have also tried it with these test values, but nothing changes on my site:

var testdate = "2016-1-1 0:0:0";
var testdate = "2016-01-01T00:00:00Z";
var testdate = "2016-1-1T0:0:0Z";
var testdate = "2016-01-01T00:00:00";
var testdate = "2016-1-1T0:0:0";

Please let me know if there's another date format I should try, or if you see anything else wrong with this code. It works when I point to one of my text fields, so I'm pretty sure it's just the date format that's messing things up.

Answer 1

UpdateListItems operation expects date string to be provided in ISO 8601 format , for example:

var dueDateVal = new Date('2016-01-01 6:00:00').toISOString();
$().SPServices({
    operation: "UpdateListItems",
    async: false,
    listName: "Requests",
    ID: 1,
    valuepairs: [["DueDate", dueDateVal]],
    completefunc: function (xData, Status) {
         console.log('List items has been updated');
    }
});

---

In addition, make sure the proper name of Due Date column is specified. UpdateListItems operation expects an array of column StaticNames and values have to be specified for valuepairs .

If column named Due Date has been created via UI, then Due_x0020_Date static name will be generated and the operation for setting its value the should be specified like this:

var dueDateVal = new Date('2016-01-01 6:00:00').toISOString();
$().SPServices({
    operation: "UpdateListItems",
    async: false,
    listName: "Requests",
    ID: 1,
    valuepairs: [["Due_x0020_Date", dueDateVal]],
    completefunc: function (xData, Status) {
         console.log('List items has been updated');
    }
});